Finding the Third Proportional to 3,987,590 and 8,747,184

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987,590 : 8,747,184 = 8,747,184 : x
2. Step 2: Convert to fraction form
   3,987,590/8,747,184 = 8,747,184/x
3. Step 3: Cross multiply
   3,987,590x = 8,747,184 × 8,747,184
4. Step 4: Simplify right side
   3,987,590x = 76,513,227,929,856
5. Step 5: Solve for x
   x = 76,513,227,929,856/3,987,590
6. Step 6: Final answer
   x = 19,187,837.25