Finding the Third Proportional to 443,299.50 and 685,732.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,299.50 : 685,732.50 = 685,732.50 : x
2. Step 2: Convert to fraction form
   443,299.50/685,732.50 = 685,732.50/x
3. Step 3: Cross multiply
   443,299.50x = 685,732.50 × 685,732.50
4. Step 4: Simplify right side
   443,299.50x = 470,229,061,556.25
5. Step 5: Solve for x
   x = 470,229,061,556.25/443,299.50
6. Step 6: Final answer
   x = 1,060,748.01