Finding the Third Proportional to 63.12 and 131.15

Step by Step Solution

1. Step 1: Write the proportion equation
   63.12 : 131.15 = 131.15 : x
2. Step 2: Convert to fraction form
   63.12/131.15 = 131.15/x
3. Step 3: Cross multiply
   63.12x = 131.15 × 131.15
4. Step 4: Simplify right side
   63.12x = 17,200.42
5. Step 5: Solve for x
   x = 17,200.42/63.12
6. Step 6: Final answer
   x = 272.49