Finding the Third Proportional to 3,935,778 and 8,491,692

Step by Step Solution

1. Step 1: Write the proportion equation
   3,935,778 : 8,491,692 = 8,491,692 : x
2. Step 2: Convert to fraction form
   3,935,778/8,491,692 = 8,491,692/x
3. Step 3: Cross multiply
   3,935,778x = 8,491,692 × 8,491,692
4. Step 4: Simplify right side
   3,935,778x = 72,108,833,022,864
5. Step 5: Solve for x
   x = 72,108,833,022,864/3,935,778
6. Step 6: Final answer
   x = 18,321,366.96