Finding the Third Proportional to 1,218,342 and 1,785,945

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,342 : 1,785,945 = 1,785,945 : x
2. Step 2: Convert to fraction form
   1,218,342/1,785,945 = 1,785,945/x
3. Step 3: Cross multiply
   1,218,342x = 1,785,945 × 1,785,945
4. Step 4: Simplify right side
   1,218,342x = 3,189,599,543,025
5. Step 5: Solve for x
   x = 3,189,599,543,025/1,218,342
6. Step 6: Final answer
   x = 2,617,983.74