Finding the Third Proportional to 1,863,446 and 3,992,623

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863,446 : 3,992,623 = 3,992,623 : x
2. Step 2: Convert to fraction form
   1,863,446/3,992,623 = 3,992,623/x
3. Step 3: Cross multiply
   1,863,446x = 3,992,623 × 3,992,623
4. Step 4: Simplify right side
   1,863,446x = 15,941,038,420,129
5. Step 5: Solve for x
   x = 15,941,038,420,129/1,863,446
6. Step 6: Final answer
   x = 8,554,601.75