Finding the Third Proportional to 3,987,585 and 8,747,174

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987,585 : 8,747,174 = 8,747,174 : x
2. Step 2: Convert to fraction form
   3,987,585/8,747,174 = 8,747,174/x
3. Step 3: Cross multiply
   3,987,585x = 8,747,174 × 8,747,174
4. Step 4: Simplify right side
   3,987,585x = 76,513,052,986,276
5. Step 5: Solve for x
   x = 76,513,052,986,276/3,987,585
6. Step 6: Final answer
   x = 19,187,817.43