Where does “exsultandus” come from?

exsultandus (Latin) comes from Latin exsultō, from Latin saltō, from Latin saliō, from Latin sāl, from Proto-Italic sāls, from Proto-Indo-European *sḗh₂l — salt.

Definitions

Ancestry of “exsultandus”, step by step

Step	Language	Word	Meaning
1	Latin	exsultō	to spring vigorously, leap or jump up
2	Latin	saltō	to dance, jump
3	Latin	saliō	to leap, jump, bound
4	Latin	sāl	salt
5	Proto-Italic	sāls	salt
6	Proto-Indo-European	*sḗh₂l	salt

Every word from Proto-Indo-European *sḗh₂l →Every word from Proto-Italic sāls →Every word from Latin sāl →