Finding the Third Proportional to 86,807.50 and 131,300

Step by Step Solution

1. Step 1: Write the proportion equation
   86,807.50 : 131,300 = 131,300 : x
2. Step 2: Convert to fraction form
   86,807.50/131,300 = 131,300/x
3. Step 3: Cross multiply
   86,807.50x = 131,300 × 131,300
4. Step 4: Simplify right side
   86,807.50x = 17,239,690,000
5. Step 5: Solve for x
   x = 17,239,690,000/86,807.50
6. Step 6: Final answer
   x = 198,596.78