Finding the Third Proportional to 328,606.50 and 499,059

Step by Step Solution

1. Step 1: Write the proportion equation
   328,606.50 : 499,059 = 499,059 : x
2. Step 2: Convert to fraction form
   328,606.50/499,059 = 499,059/x
3. Step 3: Cross multiply
   328,606.50x = 499,059 × 499,059
4. Step 4: Simplify right side
   328,606.50x = 249,059,885,481
5. Step 5: Solve for x
   x = 249,059,885,481/328,606.50
6. Step 6: Final answer
   x = 757,927.45