Finding the Third Proportional to 1,218,289 and 1,785,876

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,289 : 1,785,876 = 1,785,876 : x
2. Step 2: Convert to fraction form
   1,218,289/1,785,876 = 1,785,876/x
3. Step 3: Cross multiply
   1,218,289x = 1,785,876 × 1,785,876
4. Step 4: Simplify right side
   1,218,289x = 3,189,353,087,376
5. Step 5: Solve for x
   x = 3,189,353,087,376/1,218,289
6. Step 6: Final answer
   x = 2,617,895.33