Finding the Third Proportional to 328,975.50 and 683,799

Step by Step Solution

1. Step 1: Write the proportion equation
   328,975.50 : 683,799 = 683,799 : x
2. Step 2: Convert to fraction form
   328,975.50/683,799 = 683,799/x
3. Step 3: Cross multiply
   328,975.50x = 683,799 × 683,799
4. Step 4: Simplify right side
   328,975.50x = 467,581,072,401
5. Step 5: Solve for x
   x = 467,581,072,401/328,975.50
6. Step 6: Final answer
   x = 1,421,324.91