Donogán competed in the 1928 Summer Olympics in Amsterdam, but only placed 17th with a throw of 41.78 m and failed to qualify for the final.

[1] Hungarian discus throwing experienced an upsurge in the early 1930s, with Donogán, József Remecz, Endre Madarász and Kálmán Marvalits all entering the international elite.

[1] He was the top Hungarian, just ahead of Madarász, as European record holder Remecz underperformed.

[2] Donogán placed third – again ahead of Remecz – at the 1934 European Athletics Championships in Turin, throwing 45.91 m.[5] Donogán, who turned 37 that year, remains the oldest Hungarian medallist at the European championships.

[5] He won his second national discus title in 1935,[3][6] the same year that he finished third behind Harald Andersson at the British 1935 AAA Championships.