Finding the Third Proportional to 3,932,854 and 8,580,648

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932,854 : 8,580,648 = 8,580,648 : x
2. Step 2: Convert to fraction form
   3,932,854/8,580,648 = 8,580,648/x
3. Step 3: Cross multiply
   3,932,854x = 8,580,648 × 8,580,648
4. Step 4: Simplify right side
   3,932,854x = 73,627,520,099,904
5. Step 5: Solve for x
   x = 73,627,520,099,904/3,932,854
6. Step 6: Final answer
   x = 18,721,142.48