Finding the Third Proportional to 2,489,078 and 5,460,268

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489,078 : 5,460,268 = 5,460,268 : x
2. Step 2: Convert to fraction form
   2,489,078/5,460,268 = 5,460,268/x
3. Step 3: Cross multiply
   2,489,078x = 5,460,268 × 5,460,268
4. Step 4: Simplify right side
   2,489,078x = 29,814,526,631,824
5. Step 5: Solve for x
   x = 29,814,526,631,824/2,489,078
6. Step 6: Final answer
   x = 11,978,140.75