Finding the Third Proportional to 250,496 and 521,680

Step by Step Solution

1. Step 1: Write the proportion equation
   250,496 : 521,680 = 521,680 : x
2. Step 2: Convert to fraction form
   250,496/521,680 = 521,680/x
3. Step 3: Cross multiply
   250,496x = 521,680 × 521,680
4. Step 4: Simplify right side
   250,496x = 272,150,022,400
5. Step 5: Solve for x
   x = 272,150,022,400/250,496
6. Step 6: Final answer
   x = 1,086,444.58