Finding the Third Proportional to 64.27 and 131.91

Step by Step Solution

1. Step 1: Write the proportion equation
   64.27 : 131.91 = 131.91 : x
2. Step 2: Convert to fraction form
   64.27/131.91 = 131.91/x
3. Step 3: Cross multiply
   64.27x = 131.91 × 131.91
4. Step 4: Simplify right side
   64.27x = 17,399.26
5. Step 5: Solve for x
   x = 17,399.26/64.27
6. Step 6: Final answer
   x = 270.74