Finding the Third Proportional to 1,251,648 and 2,569,648

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251,648 : 2,569,648 = 2,569,648 : x
2. Step 2: Convert to fraction form
   1,251,648/2,569,648 = 2,569,648/x
3. Step 3: Cross multiply
   1,251,648x = 2,569,648 × 2,569,648
4. Step 4: Simplify right side
   1,251,648x = 6,603,090,843,904
5. Step 5: Solve for x
   x = 6,603,090,843,904/1,251,648
6. Step 6: Final answer
   x = 5,275,517.43