Finding the Third Proportional to 57,081 and 89,540

Step by Step Solution

1. Step 1: Write the proportion equation
   57,081 : 89,540 = 89,540 : x
2. Step 2: Convert to fraction form
   57,081/89,540 = 89,540/x
3. Step 3: Cross multiply
   57,081x = 89,540 × 89,540
4. Step 4: Simplify right side
   57,081x = 8,017,411,600
5. Step 5: Solve for x
   x = 8,017,411,600/57,081
6. Step 6: Final answer
   x = 140,456.75