Finding the Third Proportional to 1,391,208 and 1,863,468

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391,208 : 1,863,468 = 1,863,468 : x
2. Step 2: Convert to fraction form
   1,391,208/1,863,468 = 1,863,468/x
3. Step 3: Cross multiply
   1,391,208x = 1,863,468 × 1,863,468
4. Step 4: Simplify right side
   1,391,208x = 3,472,512,987,024
5. Step 5: Solve for x
   x = 3,472,512,987,024/1,391,208
6. Step 6: Final answer
   x = 2,496,041.56