Finding the Third Proportional to 42,108.75 and 61,521.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,108.75 : 61,521.75 = 61,521.75 : x
2. Step 2: Convert to fraction form
   42,108.75/61,521.75 = 61,521.75/x
3. Step 3: Cross multiply
   42,108.75x = 61,521.75 × 61,521.75
4. Step 4: Simplify right side
   42,108.75x = 3,784,925,723.06
5. Step 5: Solve for x
   x = 3,784,925,723.06/42,108.75
6. Step 6: Final answer
   x = 89,884.54