Finding the Third Proportional to 57,039.91 and 88,671.09

Step by Step Solution

1. Step 1: Write the proportion equation
   57,039.91 : 88,671.09 = 88,671.09 : x
2. Step 2: Convert to fraction form
   57,039.91/88,671.09 = 88,671.09/x
3. Step 3: Cross multiply
   57,039.91x = 88,671.09 × 88,671.09
4. Step 4: Simplify right side
   57,039.91x = 7,862,562,866.82
5. Step 5: Solve for x
   x = 7,862,562,866.82/57,039.91
6. Step 6: Final answer
   x = 137,843.19