Finding the Third Proportional to 57,745.13 and 89,374.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,745.13 : 89,374.31 = 89,374.31 : x
2. Step 2: Convert to fraction form
   57,745.13/89,374.31 = 89,374.31/x
3. Step 3: Cross multiply
   57,745.13x = 89,374.31 × 89,374.31
4. Step 4: Simplify right side
   57,745.13x = 7,987,767,734.85
5. Step 5: Solve for x
   x = 7,987,767,734.85/57,745.13
6. Step 6: Final answer
   x = 138,328.00