Finding the Third Proportional to 2,131,872 and 3,280,149

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131,872 : 3,280,149 = 3,280,149 : x
2. Step 2: Convert to fraction form
   2,131,872/3,280,149 = 3,280,149/x
3. Step 3: Cross multiply
   2,131,872x = 3,280,149 × 3,280,149
4. Step 4: Simplify right side
   2,131,872x = 10,759,377,462,201
5. Step 5: Solve for x
   x = 10,759,377,462,201/2,131,872
6. Step 6: Final answer
   x = 5,046,915.32