Finding the Third Proportional to 59,490 and 87,597

Step by Step Solution

1. Step 1: Write the proportion equation
   59,490 : 87,597 = 87,597 : x
2. Step 2: Convert to fraction form
   59,490/87,597 = 87,597/x
3. Step 3: Cross multiply
   59,490x = 87,597 × 87,597
4. Step 4: Simplify right side
   59,490x = 7,673,234,409
5. Step 5: Solve for x
   x = 7,673,234,409/59,490
6. Step 6: Final answer
   x = 128,983.60