He’s 251cm so 8 foot 3 or 99 inches
the average height is 5 foot 9
the average penis size is 5.4 inches
So 99/69 x 5.4 = 7.8 inches
If his dick was proportionately 7 inches to a 6 foot 3 man
He would be 9.24 inches
Realistically it depends on whether the tumour caused his penis to grow
one way to try work it out would be to see how many standard deviations his height, feet she hand length separately increased (I know those things don’t determine a big dick but they are measurable body parts so if his height and hands and feet all increased the same standard deviation score from what he was perhaps his dick did too.
8 foot 3 is 10.1 standard deviations from the mean
6 foot is 0.9 standard deviations from the mean so if he was due to be aboit 6 foot that is about a 9 standard deviation increase
If he was due to grow to 6 inches long that’s 1.6 standard deviations from average meaning if his sick increased as many standard deviations as his height from what he was so a 9 standard deviations increase to 10.6 standard deviations from average his dick would be 12.1 inches.
Now as height isn’t causally correlated to pe is size THIS DID NOT HAPPEN. HGH makes height, hands and feet grow and androgen makes a penis grow the question is did his penis increase just in proportion To 7.8-8.5 inches or does so so so much HGH increase LH and androgen production to make him above 9 inches maybe 10 (and I know the $10,000 10 inches challenge hasn’t found a winner maybe only 4-5 guys in the world are that size and our luck one is a christian, 1-2 play in the nba and doesn’t want his dick out there, Serge Ibaka, John Sally and the other 2 or more live in poor countries.