Finding the Third Proportional to 111,668 and 173,043.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,668 : 173,043.50 = 173,043.50 : x
2. Step 2: Convert to fraction form
   111,668/173,043.50 = 173,043.50/x
3. Step 3: Cross multiply
   111,668x = 173,043.50 × 173,043.50
4. Step 4: Simplify right side
   111,668x = 29,944,052,892.25
5. Step 5: Solve for x
   x = 29,944,052,892.25/111,668
6. Step 6: Final answer
   x = 268,152.50