Finding the Third Proportional to 1,822,878 and 3,988,992

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822,878 : 3,988,992 = 3,988,992 : x
2. Step 2: Convert to fraction form
   1,822,878/3,988,992 = 3,988,992/x
3. Step 3: Cross multiply
   1,822,878x = 3,988,992 × 3,988,992
4. Step 4: Simplify right side
   1,822,878x = 15,912,057,176,064
5. Step 5: Solve for x
   x = 15,912,057,176,064/1,822,878
6. Step 6: Final answer
   x = 8,729,085.09