Finding the Third Proportional to 339,912.50 and 476,494

Step by Step Solution

1. Step 1: Write the proportion equation
   339,912.50 : 476,494 = 476,494 : x
2. Step 2: Convert to fraction form
   339,912.50/476,494 = 476,494/x
3. Step 3: Cross multiply
   339,912.50x = 476,494 × 476,494
4. Step 4: Simplify right side
   339,912.50x = 227,046,532,036
5. Step 5: Solve for x
   x = 227,046,532,036/339,912.50
6. Step 6: Final answer
   x = 667,955.82