Finding the Third Proportional to 1,662,120 and 2,218,320

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662,120 : 2,218,320 = 2,218,320 : x
2. Step 2: Convert to fraction form
   1,662,120/2,218,320 = 2,218,320/x
3. Step 3: Cross multiply
   1,662,120x = 2,218,320 × 2,218,320
4. Step 4: Simplify right side
   1,662,120x = 4,920,943,622,400
5. Step 5: Solve for x
   x = 4,920,943,622,400/1,662,120
6. Step 6: Final answer
   x = 2,960,642.81