Finding the Third Proportional to 117,810 and 245,554

Step by Step Solution

1. Step 1: Write the proportion equation
   117,810 : 245,554 = 245,554 : x
2. Step 2: Convert to fraction form
   117,810/245,554 = 245,554/x
3. Step 3: Cross multiply
   117,810x = 245,554 × 245,554
4. Step 4: Simplify right side
   117,810x = 60,296,766,916
5. Step 5: Solve for x
   x = 60,296,766,916/117,810
6. Step 6: Final answer
   x = 511,813.66