The main goal of this paper is to investigate cross-cultural factors that predict academic ability among mathematically gifted Olympians in Finland and the United States. The following two research problems are formulated: (1) What factors contribute to or impede the development of the Olympians' mathematic talent? and (2) Do the Olympians fulfill their potential by making contributions to their fields? The results regarding the first research question indicate that the amount of cross-cultural distinctive factors (computer literacy) is less than the amount of connective factors (school hindrances, effort attributions, negative home influences) contributing to the development of the Mathematic Olympians' talent. The results regarding the latter research problem show that some factors are culture invariant (socioeconomic status, effort attributions) and some are culture dependent (school hindrances, computer literacy) in relation to both US and Finnish Olympians' later academic productivity. Results show that high school grade point averages do not necessarily predict academic productivity in Olympians' careers.