Finding the Third Proportional to 109,288 and 173,778

Step by Step Solution

1. Step 1: Write the proportion equation
   109,288 : 173,778 = 173,778 : x
2. Step 2: Convert to fraction form
   109,288/173,778 = 173,778/x
3. Step 3: Cross multiply
   109,288x = 173,778 × 173,778
4. Step 4: Simplify right side
   109,288x = 30,198,793,284
5. Step 5: Solve for x
   x = 30,198,793,284/109,288
6. Step 6: Final answer
   x = 276,323.05