Finding the Third Proportional to 1,215,675 and 2,645,406

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,675 : 2,645,406 = 2,645,406 : x
2. Step 2: Convert to fraction form
   1,215,675/2,645,406 = 2,645,406/x
3. Step 3: Cross multiply
   1,215,675x = 2,645,406 × 2,645,406
4. Step 4: Simplify right side
   1,215,675x = 6,998,172,904,836
5. Step 5: Solve for x
   x = 6,998,172,904,836/1,215,675
6. Step 6: Final answer
   x = 5,756,614.97