Finding the Third Proportional to 85.50 and 130.13

Step by Step Solution

1. Step 1: Write the proportion equation
   85.50 : 130.13 = 130.13 : x
2. Step 2: Convert to fraction form
   85.50/130.13 = 130.13/x
3. Step 3: Cross multiply
   85.50x = 130.13 × 130.13
4. Step 4: Simplify right side
   85.50x = 16,932.52
5. Step 5: Solve for x
   x = 16,932.52/85.50
6. Step 6: Final answer
   x = 198.04