Finding the Third Proportional to 3,942,242 and 8,473,408

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942,242 : 8,473,408 = 8,473,408 : x
2. Step 2: Convert to fraction form
   3,942,242/8,473,408 = 8,473,408/x
3. Step 3: Cross multiply
   3,942,242x = 8,473,408 × 8,473,408
4. Step 4: Simplify right side
   3,942,242x = 71,798,643,134,464
5. Step 5: Solve for x
   x = 71,798,643,134,464/3,942,242
6. Step 6: Final answer
   x = 18,212,642.23