Finding the Third Proportional to 155,530.50 and 327,666

Step by Step Solution

1. Step 1: Write the proportion equation
   155,530.50 : 327,666 = 327,666 : x
2. Step 2: Convert to fraction form
   155,530.50/327,666 = 327,666/x
3. Step 3: Cross multiply
   155,530.50x = 327,666 × 327,666
4. Step 4: Simplify right side
   155,530.50x = 107,365,007,556
5. Step 5: Solve for x
   x = 107,365,007,556/155,530.50
6. Step 6: Final answer
   x = 690,314.81