Finding the Third Proportional to 3,987,756 and 8,747,520

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987,756 : 8,747,520 = 8,747,520 : x
2. Step 2: Convert to fraction form
   3,987,756/8,747,520 = 8,747,520/x
3. Step 3: Cross multiply
   3,987,756x = 8,747,520 × 8,747,520
4. Step 4: Simplify right side
   3,987,756x = 76,519,106,150,400
5. Step 5: Solve for x
   x = 76,519,106,150,400/3,987,756
6. Step 6: Final answer
   x = 19,188,512.57