Finding the Third Proportional to 117,802 and 245,540

Step by Step Solution

1. Step 1: Write the proportion equation
   117,802 : 245,540 = 245,540 : x
2. Step 2: Convert to fraction form
   117,802/245,540 = 245,540/x
3. Step 3: Cross multiply
   117,802x = 245,540 × 245,540
4. Step 4: Simplify right side
   117,802x = 60,289,891,600
5. Step 5: Solve for x
   x = 60,289,891,600/117,802
6. Step 6: Final answer
   x = 511,790.05