Finding the Third Proportional to 3,647,121 and 8,442,433.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,647,121 : 8,442,433.50 = 8,442,433.50 : x
2. Step 2: Convert to fraction form
   3,647,121/8,442,433.50 = 8,442,433.50/x
3. Step 3: Cross multiply
   3,647,121x = 8,442,433.50 × 8,442,433.50
4. Step 4: Simplify right side
   3,647,121x = 71,274,683,401,922.25
5. Step 5: Solve for x
   x = 71,274,683,401,922.25/3,647,121
6. Step 6: Final answer
   x = 19,542,725.18