Finding the Third Proportional to 1,218,338 and 1,785,939

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,338 : 1,785,939 = 1,785,939 : x
2. Step 2: Convert to fraction form
   1,218,338/1,785,939 = 1,785,939/x
3. Step 3: Cross multiply
   1,218,338x = 1,785,939 × 1,785,939
4. Step 4: Simplify right side
   1,218,338x = 3,189,578,111,721
5. Step 5: Solve for x
   x = 3,189,578,111,721/1,218,338
6. Step 6: Final answer
   x = 2,617,974.74