Finding the Third Proportional to 424,684 and 619,494

Step by Step Solution

1. Step 1: Write the proportion equation
   424,684 : 619,494 = 619,494 : x
2. Step 2: Convert to fraction form
   424,684/619,494 = 619,494/x
3. Step 3: Cross multiply
   424,684x = 619,494 × 619,494
4. Step 4: Simplify right side
   424,684x = 383,772,816,036
5. Step 5: Solve for x
   x = 383,772,816,036/424,684
6. Step 6: Final answer
   x = 903,666.76