Finding the Third Proportional to 225,540 and 486,338

Step by Step Solution

1. Step 1: Write the proportion equation
   225,540 : 486,338 = 486,338 : x
2. Step 2: Convert to fraction form
   225,540/486,338 = 486,338/x
3. Step 3: Cross multiply
   225,540x = 486,338 × 486,338
4. Step 4: Simplify right side
   225,540x = 236,524,650,244
5. Step 5: Solve for x
   x = 236,524,650,244/225,540
6. Step 6: Final answer
   x = 1,048,703.78