Finding the Third Proportional to 42,892.88 and 61,878.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,892.88 : 61,878.94 = 61,878.94 : x
2. Step 2: Convert to fraction form
   42,892.88/61,878.94 = 61,878.94/x
3. Step 3: Cross multiply
   42,892.88x = 61,878.94 × 61,878.94
4. Step 4: Simplify right side
   42,892.88x = 3,829,002,906.13
5. Step 5: Solve for x
   x = 3,829,002,906.13/42,892.88
6. Step 6: Final answer
   x = 89,268.97