Finding the Third Proportional to 2,389,090 and 5,198,078

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389,090 : 5,198,078 = 5,198,078 : x
2. Step 2: Convert to fraction form
   2,389,090/5,198,078 = 5,198,078/x
3. Step 3: Cross multiply
   2,389,090x = 5,198,078 × 5,198,078
4. Step 4: Simplify right side
   2,389,090x = 27,020,014,894,084
5. Step 5: Solve for x
   x = 27,020,014,894,084/2,389,090
6. Step 6: Final answer
   x = 11,309,751.79