Finding the Third Proportional to 1,438,659 and 2,148,105

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438,659 : 2,148,105 = 2,148,105 : x
2. Step 2: Convert to fraction form
   1,438,659/2,148,105 = 2,148,105/x
3. Step 3: Cross multiply
   1,438,659x = 2,148,105 × 2,148,105
4. Step 4: Simplify right side
   1,438,659x = 4,614,355,091,025
5. Step 5: Solve for x
   x = 4,614,355,091,025/1,438,659
6. Step 6: Final answer
   x = 3,207,400.15