Finding the Third Proportional to 171,716 and 262,676

Step by Step Solution

1. Step 1: Write the proportion equation
   171,716 : 262,676 = 262,676 : x
2. Step 2: Convert to fraction form
   171,716/262,676 = 262,676/x
3. Step 3: Cross multiply
   171,716x = 262,676 × 262,676
4. Step 4: Simplify right side
   171,716x = 68,998,680,976
5. Step 5: Solve for x
   x = 68,998,680,976/171,716
6. Step 6: Final answer
   x = 401,818.59