Finding the Third Proportional to 2,388,690 and 5,197,284

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388,690 : 5,197,284 = 5,197,284 : x
2. Step 2: Convert to fraction form
   2,388,690/5,197,284 = 5,197,284/x
3. Step 3: Cross multiply
   2,388,690x = 5,197,284 × 5,197,284
4. Step 4: Simplify right side
   2,388,690x = 27,011,760,976,656
5. Step 5: Solve for x
   x = 27,011,760,976,656/2,388,690
6. Step 6: Final answer
   x = 11,308,190.25