Finding the Third Proportional to 3,947,598 and 8,608,644

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947,598 : 8,608,644 = 8,608,644 : x
2. Step 2: Convert to fraction form
   3,947,598/8,608,644 = 8,608,644/x
3. Step 3: Cross multiply
   3,947,598x = 8,608,644 × 8,608,644
4. Step 4: Simplify right side
   3,947,598x = 74,108,751,518,736
5. Step 5: Solve for x
   x = 74,108,751,518,736/3,947,598
6. Step 6: Final answer
   x = 18,773,125.21