Finding the Third Proportional to 212,940 and 327,300.75

Step by Step Solution

1. Step 1: Write the proportion equation
   212,940 : 327,300.75 = 327,300.75 : x
2. Step 2: Convert to fraction form
   212,940/327,300.75 = 327,300.75/x
3. Step 3: Cross multiply
   212,940x = 327,300.75 × 327,300.75
4. Step 4: Simplify right side
   212,940x = 107,125,780,950.56
5. Step 5: Solve for x
   x = 107,125,780,950.56/212,940
6. Step 6: Final answer
   x = 503,079.65