Finding the Third Proportional to 3,863,990 and 5,677,836

Step by Step Solution

1. Step 1: Write the proportion equation
   3,863,990 : 5,677,836 = 5,677,836 : x
2. Step 2: Convert to fraction form
   3,863,990/5,677,836 = 5,677,836/x
3. Step 3: Cross multiply
   3,863,990x = 5,677,836 × 5,677,836
4. Step 4: Simplify right side
   3,863,990x = 32,237,821,642,896
5. Step 5: Solve for x
   x = 32,237,821,642,896/3,863,990
6. Step 6: Final answer
   x = 8,343,143.14