Finding the Third Proportional to 4,280,462 and 8,915,218

Step by Step Solution

1. Step 1: Write the proportion equation
   4,280,462 : 8,915,218 = 8,915,218 : x
2. Step 2: Convert to fraction form
   4,280,462/8,915,218 = 8,915,218/x
3. Step 3: Cross multiply
   4,280,462x = 8,915,218 × 8,915,218
4. Step 4: Simplify right side
   4,280,462x = 79,481,111,987,524
5. Step 5: Solve for x
   x = 79,481,111,987,524/4,280,462
6. Step 6: Final answer
   x = 18,568,348.93