Finding the Third Proportional to 1,202,790 and 2,643,660

Step by Step Solution

1. Step 1: Write the proportion equation
   1,202,790 : 2,643,660 = 2,643,660 : x
2. Step 2: Convert to fraction form
   1,202,790/2,643,660 = 2,643,660/x
3. Step 3: Cross multiply
   1,202,790x = 2,643,660 × 2,643,660
4. Step 4: Simplify right side
   1,202,790x = 6,988,938,195,600
5. Step 5: Solve for x
   x = 6,988,938,195,600/1,202,790
6. Step 6: Final answer
   x = 5,810,605.51