Finding the Third Proportional to 636,624 and 1,381,744

Step by Step Solution

1. Step 1: Write the proportion equation
   636,624 : 1,381,744 = 1,381,744 : x
2. Step 2: Convert to fraction form
   636,624/1,381,744 = 1,381,744/x
3. Step 3: Cross multiply
   636,624x = 1,381,744 × 1,381,744
4. Step 4: Simplify right side
   636,624x = 1,909,216,481,536
5. Step 5: Solve for x
   x = 1,909,216,481,536/636,624
6. Step 6: Final answer
   x = 2,998,970.32