Finding the Third Proportional to 3,940,514 and 8,509,732

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940,514 : 8,509,732 = 8,509,732 : x
2. Step 2: Convert to fraction form
   3,940,514/8,509,732 = 8,509,732/x
3. Step 3: Cross multiply
   3,940,514x = 8,509,732 × 8,509,732
4. Step 4: Simplify right side
   3,940,514x = 72,415,538,711,824
5. Step 5: Solve for x
   x = 72,415,538,711,824/3,940,514
6. Step 6: Final answer
   x = 18,377,180.92