Finding the Third Proportional to 108,658.50 and 166,218

Step by Step Solution

1. Step 1: Write the proportion equation
   108,658.50 : 166,218 = 166,218 : x
2. Step 2: Convert to fraction form
   108,658.50/166,218 = 166,218/x
3. Step 3: Cross multiply
   108,658.50x = 166,218 × 166,218
4. Step 4: Simplify right side
   108,658.50x = 27,628,423,524
5. Step 5: Solve for x
   x = 27,628,423,524/108,658.50
6. Step 6: Final answer
   x = 254,268.41