Finding the Third Proportional to 250,411.50 and 521,559

Step by Step Solution

1. Step 1: Write the proportion equation
   250,411.50 : 521,559 = 521,559 : x
2. Step 2: Convert to fraction form
   250,411.50/521,559 = 521,559/x
3. Step 3: Cross multiply
   250,411.50x = 521,559 × 521,559
4. Step 4: Simplify right side
   250,411.50x = 272,023,790,481
5. Step 5: Solve for x
   x = 272,023,790,481/250,411.50
6. Step 6: Final answer
   x = 1,086,307.10