Finding the Third Proportional to 115,449 and 173,509.50

Step by Step Solution

1. Step 1: Write the proportion equation
   115,449 : 173,509.50 = 173,509.50 : x
2. Step 2: Convert to fraction form
   115,449/173,509.50 = 173,509.50/x
3. Step 3: Cross multiply
   115,449x = 173,509.50 × 173,509.50
4. Step 4: Simplify right side
   115,449x = 30,105,546,590.25
5. Step 5: Solve for x
   x = 30,105,546,590.25/115,449
6. Step 6: Final answer
   x = 260,769.23