2nd Inversion — Maj7

5th in bass

Prove it — just do the practice exercise.
CMaj7 2nd Inversion
G (5)B (7)C (R)E (3)
In 2nd Inversion the 5th is on the bottom:

• 5 – 7 – R – 3

Middle register — connects root position and higher inversions.

Example: CMaj7/G = G + B + C + E