Where does “Keski-Makedonia” come from?

Keski-Makedonia (Finnish) comes from Finnish Makedonia, from Ancient Greek μακεδονία, from Ancient Greek μακεδνός, from Ancient Greek μακρός, from Proto-Italic makros, from Proto-Indo-European mh₂ḱrós, from Proto-Indo-European meh₂ḱ- — to raise, increase; long.

Ancestry of “Keski-Makedonia”, step by step

Step	Language	Word	Meaning
1	Finnish	Makedonia	Macedonian language
2	Ancient Greek	μακεδονία	highland
3	Ancient Greek	μακεδνός	tall, taper
4	Ancient Greek	μακρός	long; tall, deep; far, distant
5	Proto-Italic	makros	—
6	Proto-Indo-European	mh₂ḱrós	lean, meager
7	Proto-Indo-European	meh₂ḱ-	to raise, increase; long

Every word from Proto-Indo-European meh₂ḱ- →Every word from Proto-Indo-European mh₂ḱrós →Every word from Proto-Italic makros →