Finding the Third Proportional to 225,640 and 495,560

Step by Step Solution

1. Step 1: Write the proportion equation
   225,640 : 495,560 = 495,560 : x
2. Step 2: Convert to fraction form
   225,640/495,560 = 495,560/x
3. Step 3: Cross multiply
   225,640x = 495,560 × 495,560
4. Step 4: Simplify right side
   225,640x = 245,579,713,600
5. Step 5: Solve for x
   x = 245,579,713,600/225,640
6. Step 6: Final answer
   x = 1,088,369.59