Finding the Third Proportional to 63.91 and 132.89

Step by Step Solution

1. Step 1: Write the proportion equation
   63.91 : 132.89 = 132.89 : x
2. Step 2: Convert to fraction form
   63.91/132.89 = 132.89/x
3. Step 3: Cross multiply
   63.91x = 132.89 × 132.89
4. Step 4: Simplify right side
   63.91x = 17,659.92
5. Step 5: Solve for x
   x = 17,659.92/63.91
6. Step 6: Final answer
   x = 276.31