Finding the Third Proportional to 132,785.50 and 203,218

Step by Step Solution

1. Step 1: Write the proportion equation
   132,785.50 : 203,218 = 203,218 : x
2. Step 2: Convert to fraction form
   132,785.50/203,218 = 203,218/x
3. Step 3: Cross multiply
   132,785.50x = 203,218 × 203,218
4. Step 4: Simplify right side
   132,785.50x = 41,297,555,524
5. Step 5: Solve for x
   x = 41,297,555,524/132,785.50
6. Step 6: Final answer
   x = 311,009.53