Finding the Third Proportional to 1,822,920 and 3,988,896

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822,920 : 3,988,896 = 3,988,896 : x
2. Step 2: Convert to fraction form
   1,822,920/3,988,896 = 3,988,896/x
3. Step 3: Cross multiply
   1,822,920x = 3,988,896 × 3,988,896
4. Step 4: Simplify right side
   1,822,920x = 15,911,291,298,816
5. Step 5: Solve for x
   x = 15,911,291,298,816/1,822,920
6. Step 6: Final answer
   x = 8,728,463.84