It is 7/8.
.625
3/8 is exactly halfway between one half and one fourth
19/24ths
9/4
9/8
5/8
23/35
Halfway between one and a quarter and one and three quarters lies one and a half.
You need two numbers to find something halfway between them.
Between 34 and 57 is 91/2 Between 3/4 and 5/7 is 41/56
what decimal is exactly halfway between 0.0002 and 0.0003
7 eighths