Finding the Third Proportional to 225,510 and 495,660

Step by Step Solution

1. Step 1: Write the proportion equation
   225,510 : 495,660 = 495,660 : x
2. Step 2: Convert to fraction form
   225,510/495,660 = 495,660/x
3. Step 3: Cross multiply
   225,510x = 495,660 × 495,660
4. Step 4: Simplify right side
   225,510x = 245,678,835,600
5. Step 5: Solve for x
   x = 245,678,835,600/225,510
6. Step 6: Final answer
   x = 1,089,436.55