Finding the Third Proportional to 111,121.50 and 235,479

Step by Step Solution

1. Step 1: Write the proportion equation
   111,121.50 : 235,479 = 235,479 : x
2. Step 2: Convert to fraction form
   111,121.50/235,479 = 235,479/x
3. Step 3: Cross multiply
   111,121.50x = 235,479 × 235,479
4. Step 4: Simplify right side
   111,121.50x = 55,450,359,441
5. Step 5: Solve for x
   x = 55,450,359,441/111,121.50
6. Step 6: Final answer
   x = 499,006.58