Finding the Third Proportional to 108,559.50 and 235,689

Step by Step Solution

1. Step 1: Write the proportion equation
   108,559.50 : 235,689 = 235,689 : x
2. Step 2: Convert to fraction form
   108,559.50/235,689 = 235,689/x
3. Step 3: Cross multiply
   108,559.50x = 235,689 × 235,689
4. Step 4: Simplify right side
   108,559.50x = 55,549,304,721
5. Step 5: Solve for x
   x = 55,549,304,721/108,559.50
6. Step 6: Final answer
   x = 511,694.55