the fraction halfway between two other fractionsis the average value or mean value of two given numbers. Let x and y denote the given two numbers then the mean value is calculated by:

Let x < y then according to your question.

Plug in the values you already know into the formula calculating the mean value:

Solve this equation for y.

EDIT: Do you mean by0.190476 ( which is a recurring decimal)that the given value is:

If so: