Finding the Third Proportional to 62,109.50 and 87,800

Step by Step Solution

1. Step 1: Write the proportion equation
   62,109.50 : 87,800 = 87,800 : x
2. Step 2: Convert to fraction form
   62,109.50/87,800 = 87,800/x
3. Step 3: Cross multiply
   62,109.50x = 87,800 × 87,800
4. Step 4: Simplify right side
   62,109.50x = 7,708,840,000
5. Step 5: Solve for x
   x = 7,708,840,000/62,109.50
6. Step 6: Final answer
   x = 124,116.92