Finding the Third Proportional to 56,191.50 and 87,000.75

Step by Step Solution

1. Step 1: Write the proportion equation
   56,191.50 : 87,000.75 = 87,000.75 : x
2. Step 2: Convert to fraction form
   56,191.50/87,000.75 = 87,000.75/x
3. Step 3: Cross multiply
   56,191.50x = 87,000.75 × 87,000.75
4. Step 4: Simplify right side
   56,191.50x = 7,569,130,500.56
5. Step 5: Solve for x
   x = 7,569,130,500.56/56,191.50
6. Step 6: Final answer
   x = 134,702.41