Finding the Third Proportional to 90,352 and 139,624

Step by Step Solution

1. Step 1: Write the proportion equation
   90,352 : 139,624 = 139,624 : x
2. Step 2: Convert to fraction form
   90,352/139,624 = 139,624/x
3. Step 3: Cross multiply
   90,352x = 139,624 × 139,624
4. Step 4: Simplify right side
   90,352x = 19,494,861,376
5. Step 5: Solve for x
   x = 19,494,861,376/90,352
6. Step 6: Final answer
   x = 215,765.69