Finding the Third Proportional to 1,055,258 and 2,147,779

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055,258 : 2,147,779 = 2,147,779 : x
2. Step 2: Convert to fraction form
   1,055,258/2,147,779 = 2,147,779/x
3. Step 3: Cross multiply
   1,055,258x = 2,147,779 × 2,147,779
4. Step 4: Simplify right side
   1,055,258x = 4,612,954,632,841
5. Step 5: Solve for x
   x = 4,612,954,632,841/1,055,258
6. Step 6: Final answer
   x = 4,371,399.82