Finding the Third Proportional to 172,453.50 and 231,747.75

Step by Step Solution

1. Step 1: Write the proportion equation
   172,453.50 : 231,747.75 = 231,747.75 : x
2. Step 2: Convert to fraction form
   172,453.50/231,747.75 = 231,747.75/x
3. Step 3: Cross multiply
   172,453.50x = 231,747.75 × 231,747.75
4. Step 4: Simplify right side
   172,453.50x = 53,707,019,630.06
5. Step 5: Solve for x
   x = 53,707,019,630.06/172,453.50
6. Step 6: Final answer
   x = 311,428.99