strike a happy medium

[strike a happy medium] {v. phr.} To find an answer to a problemthat is halfway between two unsatisfactory answers.

Mary said thedress was blue. Jane said it was green. They finally struck a happymedium and decided it was blue-green.

Two teaspoons of sugar madethe cup of coffee too sweet, and one not sweet enough. One heapingteaspoon struck a happy medium.