It is: 75
Wiki User
∙ 7y ago63
87-63 = 24
It is 87, the number halfway between the two middle numbers.
24 + 63 = 87
65
1827
The closest to a halfway point by road is Pocono Summit, PA. About 87 miles from Binghamton and about 90 miles from NYC.
The halfway point is on I-87, just north of the NJ/NY state line, near Tuxedo Park, NY.
87 - 39 = 48
57
88 and 88.1, for example.
69.7241