Finding the Third Proportional to 4,394,544 and 9,639,993

Step by Step Solution

1. Step 1: Write the proportion equation
   4,394,544 : 9,639,993 = 9,639,993 : x
2. Step 2: Convert to fraction form
   4,394,544/9,639,993 = 9,639,993/x
3. Step 3: Cross multiply
   4,394,544x = 9,639,993 × 9,639,993
4. Step 4: Simplify right side
   4,394,544x = 92,929,465,040,049
5. Step 5: Solve for x
   x = 92,929,465,040,049/4,394,544
6. Step 6: Final answer
   x = 21,146,554.69