Finding the Third Proportional to 111,905 and 173,530

Step by Step Solution

1. Step 1: Write the proportion equation
   111,905 : 173,530 = 173,530 : x
2. Step 2: Convert to fraction form
   111,905/173,530 = 173,530/x
3. Step 3: Cross multiply
   111,905x = 173,530 × 173,530
4. Step 4: Simplify right side
   111,905x = 30,112,660,900
5. Step 5: Solve for x
   x = 30,112,660,900/111,905
6. Step 6: Final answer
   x = 269,091.29