Finding the Third Proportional to 42,382.97 and 57,559.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,382.97 : 57,559.78 = 57,559.78 : x
2. Step 2: Convert to fraction form
   42,382.97/57,559.78 = 57,559.78/x
3. Step 3: Cross multiply
   42,382.97x = 57,559.78 × 57,559.78
4. Step 4: Simplify right side
   42,382.97x = 3,313,128,417.55
5. Step 5: Solve for x
   x = 3,313,128,417.55/42,382.97
6. Step 6: Final answer
   x = 78,171.22