Finding the Third Proportional to 644,560 and 1,382,384

Step by Step Solution

1. Step 1: Write the proportion equation
   644,560 : 1,382,384 = 1,382,384 : x
2. Step 2: Convert to fraction form
   644,560/1,382,384 = 1,382,384/x
3. Step 3: Cross multiply
   644,560x = 1,382,384 × 1,382,384
4. Step 4: Simplify right side
   644,560x = 1,910,985,523,456
5. Step 5: Solve for x
   x = 1,910,985,523,456/644,560
6. Step 6: Final answer
   x = 2,964,790.75