Finding the Third Proportional to 2,388,780 and 5,197,440

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388,780 : 5,197,440 = 5,197,440 : x
2. Step 2: Convert to fraction form
   2,388,780/5,197,440 = 5,197,440/x
3. Step 3: Cross multiply
   2,388,780x = 5,197,440 × 5,197,440
4. Step 4: Simplify right side
   2,388,780x = 27,013,382,553,600
5. Step 5: Solve for x
   x = 27,013,382,553,600/2,388,780
6. Step 6: Final answer
   x = 11,308,443.04