Finding the Third Proportional to 3,811,674 and 8,379,074

Step by Step Solution

1. Step 1: Write the proportion equation
   3,811,674 : 8,379,074 = 8,379,074 : x
2. Step 2: Convert to fraction form
   3,811,674/8,379,074 = 8,379,074/x
3. Step 3: Cross multiply
   3,811,674x = 8,379,074 × 8,379,074
4. Step 4: Simplify right side
   3,811,674x = 70,208,881,097,476
5. Step 5: Solve for x
   x = 70,208,881,097,476/3,811,674
6. Step 6: Final answer
   x = 18,419,434.90