Finding the Third Proportional to 63.31 and 136.31

Step by Step Solution

1. Step 1: Write the proportion equation
   63.31 : 136.31 = 136.31 : x
2. Step 2: Convert to fraction form
   63.31/136.31 = 136.31/x
3. Step 3: Cross multiply
   63.31x = 136.31 × 136.31
4. Step 4: Simplify right side
   63.31x = 18,581.10
5. Step 5: Solve for x
   x = 18,581.10/63.31
6. Step 6: Final answer
   x = 293.48