Finding the Third Proportional to 120,432 and 250,422

Step by Step Solution

1. Step 1: Write the proportion equation
   120,432 : 250,422 = 250,422 : x
2. Step 2: Convert to fraction form
   120,432/250,422 = 250,422/x
3. Step 3: Cross multiply
   120,432x = 250,422 × 250,422
4. Step 4: Simplify right side
   120,432x = 62,711,178,084
5. Step 5: Solve for x
   x = 62,711,178,084/120,432
6. Step 6: Final answer
   x = 520,718.56