Finding the Third Proportional to 42,691.50 and 61,490.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,691.50 : 61,490.25 = 61,490.25 : x
2. Step 2: Convert to fraction form
   42,691.50/61,490.25 = 61,490.25/x
3. Step 3: Cross multiply
   42,691.50x = 61,490.25 × 61,490.25
4. Step 4: Simplify right side
   42,691.50x = 3,781,050,845.06
5. Step 5: Solve for x
   x = 3,781,050,845.06/42,691.50
6. Step 6: Final answer
   x = 88,566.83