Finding the Third Proportional to 3,987,216 and 8,496,384

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987,216 : 8,496,384 = 8,496,384 : x
2. Step 2: Convert to fraction form
   3,987,216/8,496,384 = 8,496,384/x
3. Step 3: Cross multiply
   3,987,216x = 8,496,384 × 8,496,384
4. Step 4: Simplify right side
   3,987,216x = 72,188,541,075,456
5. Step 5: Solve for x
   x = 72,188,541,075,456/3,987,216
6. Step 6: Final answer
   x = 18,104,998.85