Finding the Third Proportional to 109,216 and 173,660

Step by Step Solution

1. Step 1: Write the proportion equation
   109,216 : 173,660 = 173,660 : x
2. Step 2: Convert to fraction form
   109,216/173,660 = 173,660/x
3. Step 3: Cross multiply
   109,216x = 173,660 × 173,660
4. Step 4: Simplify right side
   109,216x = 30,157,795,600
5. Step 5: Solve for x
   x = 30,157,795,600/109,216
6. Step 6: Final answer
   x = 276,129.83