Finding the Third Proportional to 61,543.55 and 89,872.03

Step by Step Solution

1. Step 1: Write the proportion equation
   61,543.55 : 89,872.03 = 89,872.03 : x
2. Step 2: Convert to fraction form
   61,543.55/89,872.03 = 89,872.03/x
3. Step 3: Cross multiply
   61,543.55x = 89,872.03 × 89,872.03
4. Step 4: Simplify right side
   61,543.55x = 8,076,982,001.00
5. Step 5: Solve for x
   x = 8,076,982,001.00/61,543.55
6. Step 6: Final answer
   x = 131,240.11