Finding the Third Proportional to 57,570.75 and 89,272.13

Step by Step Solution

1. Step 1: Write the proportion equation
   57,570.75 : 89,272.13 = 89,272.13 : x
2. Step 2: Convert to fraction form
   57,570.75/89,272.13 = 89,272.13/x
3. Step 3: Cross multiply
   57,570.75x = 89,272.13 × 89,272.13
4. Step 4: Simplify right side
   57,570.75x = 7,969,512,302.02
5. Step 5: Solve for x
   x = 7,969,512,302.02/57,570.75
6. Step 6: Final answer
   x = 138,429.89