Finding the Third Proportional to 166,455 and 260,838.56

Step by Step Solution

1. Step 1: Write the proportion equation
   166,455 : 260,838.56 = 260,838.56 : x
2. Step 2: Convert to fraction form
   166,455/260,838.56 = 260,838.56/x
3. Step 3: Cross multiply
   166,455x = 260,838.56 × 260,838.56
4. Step 4: Simplify right side
   166,455x = 68,036,755,687.07
5. Step 5: Solve for x
   x = 68,036,755,687.07/166,455
6. Step 6: Final answer
   x = 408,739.63