Hero who anwered the riddle of sphinx?

My name is tyler Ford i might no be a grouwn up but i thought clever all nigh and here is my anser------a baby walks on for leggs as a child)(an adult walks on twho)(and a old man wals on three includeing his cane and the most leggs the more weeker baby is the weekist)( old man is second he is in the middle)(and an adult isnt the weekist