Finding the Third Proportional to 1,251,660 and 2,569,670

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251,660 : 2,569,670 = 2,569,670 : x
2. Step 2: Convert to fraction form
   1,251,660/2,569,670 = 2,569,670/x
3. Step 3: Cross multiply
   1,251,660x = 2,569,670 × 2,569,670
4. Step 4: Simplify right side
   1,251,660x = 6,603,203,908,900
5. Step 5: Solve for x
   x = 6,603,203,908,900/1,251,660
6. Step 6: Final answer
   x = 5,275,557.19