Finding the Third Proportional to 57,988 and 89,600

Step by Step Solution

1. Step 1: Write the proportion equation
   57,988 : 89,600 = 89,600 : x
2. Step 2: Convert to fraction form
   57,988/89,600 = 89,600/x
3. Step 3: Cross multiply
   57,988x = 89,600 × 89,600
4. Step 4: Simplify right side
   57,988x = 8,028,160,000
5. Step 5: Solve for x
   x = 8,028,160,000/57,988
6. Step 6: Final answer
   x = 138,445.20