De or het megadancing?

The correct Dutch article is:

de megadancing

Rule Words ending in -ing: almost always de. See the rule

How to use megadancing

the megadancingde megadancing
this megadancingdeze megadancing
that megadancingdie megadancing
our megadancingonze megadancing
your megadancingjouw megadancing
every megadancingelke megadancing
which megadancing?welke megadancing?
a big megadancing / the big megadancingeen grote megadancing, de grote megadancing