Finding the Third Proportional to 1,218,988 and 1,859,422

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,988 : 1,859,422 = 1,859,422 : x
2. Step 2: Convert to fraction form
   1,218,988/1,859,422 = 1,859,422/x
3. Step 3: Cross multiply
   1,218,988x = 1,859,422 × 1,859,422
4. Step 4: Simplify right side
   1,218,988x = 3,457,450,174,084
5. Step 5: Solve for x
   x = 3,457,450,174,084/1,218,988
6. Step 6: Final answer
   x = 2,836,328.31