Finding the Third Proportional to 217,939.50 and 327,132

Step by Step Solution

1. Step 1: Write the proportion equation
   217,939.50 : 327,132 = 327,132 : x
2. Step 2: Convert to fraction form
   217,939.50/327,132 = 327,132/x
3. Step 3: Cross multiply
   217,939.50x = 327,132 × 327,132
4. Step 4: Simplify right side
   217,939.50x = 107,015,345,424
5. Step 5: Solve for x
   x = 107,015,345,424/217,939.50
6. Step 6: Final answer
   x = 491,032.35