Finding the Third Proportional to 2,131,872 and 4,662,291

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131,872 : 4,662,291 = 4,662,291 : x
2. Step 2: Convert to fraction form
   2,131,872/4,662,291 = 4,662,291/x
3. Step 3: Cross multiply
   2,131,872x = 4,662,291 × 4,662,291
4. Step 4: Simplify right side
   2,131,872x = 21,736,957,368,681
5. Step 5: Solve for x
   x = 21,736,957,368,681/2,131,872
6. Step 6: Final answer
   x = 10,196,183.15