Finding the Third Proportional to 644,920 and 1,366,672

Step by Step Solution

1. Step 1: Write the proportion equation
   644,920 : 1,366,672 = 1,366,672 : x
2. Step 2: Convert to fraction form
   644,920/1,366,672 = 1,366,672/x
3. Step 3: Cross multiply
   644,920x = 1,366,672 × 1,366,672
4. Step 4: Simplify right side
   644,920x = 1,867,792,355,584
5. Step 5: Solve for x
   x = 1,867,792,355,584/644,920
6. Step 6: Final answer
   x = 2,896,161.32