Finding the Third Proportional to 644,560 and 1,382,448

Step by Step Solution

1. Step 1: Write the proportion equation
   644,560 : 1,382,448 = 1,382,448 : x
2. Step 2: Convert to fraction form
   644,560/1,382,448 = 1,382,448/x
3. Step 3: Cross multiply
   644,560x = 1,382,448 × 1,382,448
4. Step 4: Simplify right side
   644,560x = 1,911,162,472,704
5. Step 5: Solve for x
   x = 1,911,162,472,704/644,560
6. Step 6: Final answer
   x = 2,965,065.27