Finding the Third Proportional to 611,724 and 1,439,436

Step by Step Solution

1. Step 1: Write the proportion equation
   611,724 : 1,439,436 = 1,439,436 : x
2. Step 2: Convert to fraction form
   611,724/1,439,436 = 1,439,436/x
3. Step 3: Cross multiply
   611,724x = 1,439,436 × 1,439,436
4. Step 4: Simplify right side
   611,724x = 2,071,975,998,096
5. Step 5: Solve for x
   x = 2,071,975,998,096/611,724
6. Step 6: Final answer
   x = 3,387,109.22