Finding the Third Proportional to 439,222.50 and 916,569

Step by Step Solution

1. Step 1: Write the proportion equation
   439,222.50 : 916,569 = 916,569 : x
2. Step 2: Convert to fraction form
   439,222.50/916,569 = 916,569/x
3. Step 3: Cross multiply
   439,222.50x = 916,569 × 916,569
4. Step 4: Simplify right side
   439,222.50x = 840,098,731,761
5. Step 5: Solve for x
   x = 840,098,731,761/439,222.50
6. Step 6: Final answer
   x = 1,912,695.12