
When you ask "What number is halfway between 78 and 302?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=78 and Y=302.

To find the number halfway between 78 and 302, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 78 and 302 into our formula, we get:
(78 + 302)/2 = 190
Thus, the number halfway between 78 and 302 is 190.
To check that our answer is correct, we subtract 78 from 190 and subtract 190 from 302 and compare the two numbers:
190 - 78 = 112
302 - 190 = 112
As you can see, the halfway number is 112 higher than 78 and 112 lower than 302. Therefore, our halfway between answer of 190 above is correct.
Halfway Between
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Halfway Between 78 and 303
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