Finding the Third Proportional to 3,987,572 and 8,747,148

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987,572 : 8,747,148 = 8,747,148 : x
2. Step 2: Convert to fraction form
   3,987,572/8,747,148 = 8,747,148/x
3. Step 3: Cross multiply
   3,987,572x = 8,747,148 × 8,747,148
4. Step 4: Simplify right side
   3,987,572x = 76,512,598,133,904
5. Step 5: Solve for x
   x = 76,512,598,133,904/3,987,572
6. Step 6: Final answer
   x = 19,187,765.92