Finding the Third Proportional to 4,170,474 and 9,138,042

Step by Step Solution

1. Step 1: Write the proportion equation
   4,170,474 : 9,138,042 = 9,138,042 : x
2. Step 2: Convert to fraction form
   4,170,474/9,138,042 = 9,138,042/x
3. Step 3: Cross multiply
   4,170,474x = 9,138,042 × 9,138,042
4. Step 4: Simplify right side
   4,170,474x = 83,503,811,593,764
5. Step 5: Solve for x
   x = 83,503,811,593,764/4,170,474
6. Step 6: Final answer
   x = 20,022,618.91