Finding the Third Proportional to 171,663 and 262,600.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,663 : 262,600.50 = 262,600.50 : x
2. Step 2: Convert to fraction form
   171,663/262,600.50 = 262,600.50/x
3. Step 3: Cross multiply
   171,663x = 262,600.50 × 262,600.50
4. Step 4: Simplify right side
   171,663x = 68,959,022,600.25
5. Step 5: Solve for x
   x = 68,959,022,600.25/171,663
6. Step 6: Final answer
   x = 401,711.62