Finding the Third Proportional to 171,707 and 262,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,707 : 262,665.50 = 262,665.50 : x
2. Step 2: Convert to fraction form
   171,707/262,665.50 = 262,665.50/x
3. Step 3: Cross multiply
   171,707x = 262,665.50 × 262,665.50
4. Step 4: Simplify right side
   171,707x = 68,993,164,890.25
5. Step 5: Solve for x
   x = 68,993,164,890.25/171,707
6. Step 6: Final answer
   x = 401,807.53