Finding the Third Proportional to 3,647,112 and 8,442,411

Step by Step Solution

1. Step 1: Write the proportion equation
   3,647,112 : 8,442,411 = 8,442,411 : x
2. Step 2: Convert to fraction form
   3,647,112/8,442,411 = 8,442,411/x
3. Step 3: Cross multiply
   3,647,112x = 8,442,411 × 8,442,411
4. Step 4: Simplify right side
   3,647,112x = 71,274,303,492,921
5. Step 5: Solve for x
   x = 71,274,303,492,921/3,647,112
6. Step 6: Final answer
   x = 19,542,669.24