Finding the Third Proportional to 3,644,250 and 8,436,663

Step by Step Solution

1. Step 1: Write the proportion equation
   3,644,250 : 8,436,663 = 8,436,663 : x
2. Step 2: Convert to fraction form
   3,644,250/8,436,663 = 8,436,663/x
3. Step 3: Cross multiply
   3,644,250x = 8,436,663 × 8,436,663
4. Step 4: Simplify right side
   3,644,250x = 71,177,282,575,569
5. Step 5: Solve for x
   x = 71,177,282,575,569/3,644,250
6. Step 6: Final answer
   x = 19,531,394.00