Finding the Third Proportional to 1,822,813 and 3,988,863

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822,813 : 3,988,863 = 3,988,863 : x
2. Step 2: Convert to fraction form
   1,822,813/3,988,863 = 3,988,863/x
3. Step 3: Cross multiply
   1,822,813x = 3,988,863 × 3,988,863
4. Step 4: Simplify right side
   1,822,813x = 15,911,028,032,769
5. Step 5: Solve for x
   x = 15,911,028,032,769/1,822,813
6. Step 6: Final answer
   x = 8,728,831.77