Finding the Third Proportional to 3,987,583 and 8,747,170

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987,583 : 8,747,170 = 8,747,170 : x
2. Step 2: Convert to fraction form
   3,987,583/8,747,170 = 8,747,170/x
3. Step 3: Cross multiply
   3,987,583x = 8,747,170 × 8,747,170
4. Step 4: Simplify right side
   3,987,583x = 76,512,983,008,900
5. Step 5: Solve for x
   x = 76,512,983,008,900/3,987,583
6. Step 6: Final answer
   x = 19,187,809.51