De or het medefinanciering?

The correct Dutch article is:

de medefinanciering

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

How to use medefinanciering

the medefinancieringde medefinanciering
this medefinancieringdeze medefinanciering
that medefinancieringdie medefinanciering
our medefinancieringonze medefinanciering
your medefinancieringjouw medefinanciering
every medefinancieringelke medefinanciering
which medefinanciering?welke medefinanciering?
a big medefinanciering / the big medefinancieringeen grote medefinanciering, de grote medefinanciering