Finding the Third Proportional to 3,846,042 and 8,406,507

Step by Step Solution

1. Step 1: Write the proportion equation
   3,846,042 : 8,406,507 = 8,406,507 : x
2. Step 2: Convert to fraction form
   3,846,042/8,406,507 = 8,406,507/x
3. Step 3: Cross multiply
   3,846,042x = 8,406,507 × 8,406,507
4. Step 4: Simplify right side
   3,846,042x = 70,669,359,941,049
5. Step 5: Solve for x
   x = 70,669,359,941,049/3,846,042
6. Step 6: Final answer
   x = 18,374,567.92