Finding the Third Proportional to 3,863,428 and 8,444,840

Step by Step Solution

1. Step 1: Write the proportion equation
   3,863,428 : 8,444,840 = 8,444,840 : x
2. Step 2: Convert to fraction form
   3,863,428/8,444,840 = 8,444,840/x
3. Step 3: Cross multiply
   3,863,428x = 8,444,840 × 8,444,840
4. Step 4: Simplify right side
   3,863,428x = 71,315,322,625,600
5. Step 5: Solve for x
   x = 71,315,322,625,600/3,863,428
6. Step 6: Final answer
   x = 18,459,078.99