Finding the Third Proportional to 57,081.50 and 89,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,081.50 : 89,540.50 = 89,540.50 : x
2. Step 2: Convert to fraction form
   57,081.50/89,540.50 = 89,540.50/x
3. Step 3: Cross multiply
   57,081.50x = 89,540.50 × 89,540.50
4. Step 4: Simplify right side
   57,081.50x = 8,017,501,140.25
5. Step 5: Solve for x
   x = 8,017,501,140.25/57,081.50
6. Step 6: Final answer
   x = 140,457.09