Finding the Third Proportional to 171,660 and 262,597.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,660 : 262,597.50 = 262,597.50 : x
2. Step 2: Convert to fraction form
   171,660/262,597.50 = 262,597.50/x
3. Step 3: Cross multiply
   171,660x = 262,597.50 × 262,597.50
4. Step 4: Simplify right side
   171,660x = 68,957,447,006.25
5. Step 5: Solve for x
   x = 68,957,447,006.25/171,660
6. Step 6: Final answer
   x = 401,709.47