Finding the Third Proportional to 3,987,576 and 8,747,156

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987,576 : 8,747,156 = 8,747,156 : x
2. Step 2: Convert to fraction form
   3,987,576/8,747,156 = 8,747,156/x
3. Step 3: Cross multiply
   3,987,576x = 8,747,156 × 8,747,156
4. Step 4: Simplify right side
   3,987,576x = 76,512,738,088,336
5. Step 5: Solve for x
   x = 76,512,738,088,336/3,987,576
6. Step 6: Final answer
   x = 19,187,781.77