Finding the Third Proportional to 639,092 and 1,377,828

Step by Step Solution

1. Step 1: Write the proportion equation
   639,092 : 1,377,828 = 1,377,828 : x
2. Step 2: Convert to fraction form
   639,092/1,377,828 = 1,377,828/x
3. Step 3: Cross multiply
   639,092x = 1,377,828 × 1,377,828
4. Step 4: Simplify right side
   639,092x = 1,898,409,997,584
5. Step 5: Solve for x
   x = 1,898,409,997,584/639,092
6. Step 6: Final answer
   x = 2,970,479.99