Finding the Third Proportional to 1,218,285 and 1,785,870

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,285 : 1,785,870 = 1,785,870 : x
2. Step 2: Convert to fraction form
   1,218,285/1,785,870 = 1,785,870/x
3. Step 3: Cross multiply
   1,218,285x = 1,785,870 × 1,785,870
4. Step 4: Simplify right side
   1,218,285x = 3,189,331,656,900
5. Step 5: Solve for x
   x = 3,189,331,656,900/1,218,285
6. Step 6: Final answer
   x = 2,617,886.34