Finding the Third Proportional to 57,454.31 and 89,169.61

Step by Step Solution

1. Step 1: Write the proportion equation
   57,454.31 : 89,169.61 = 89,169.61 : x
2. Step 2: Convert to fraction form
   57,454.31/89,169.61 = 89,169.61/x
3. Step 3: Cross multiply
   57,454.31x = 89,169.61 × 89,169.61
4. Step 4: Simplify right side
   57,454.31x = 7,951,219,236.09
5. Step 5: Solve for x
   x = 7,951,219,236.09/57,454.31
6. Step 6: Final answer
   x = 138,392.04