Finding the Third Proportional to 457,722 and 665,806.50

Step by Step Solution

1. Step 1: Write the proportion equation
   457,722 : 665,806.50 = 665,806.50 : x
2. Step 2: Convert to fraction form
   457,722/665,806.50 = 665,806.50/x
3. Step 3: Cross multiply
   457,722x = 665,806.50 × 665,806.50
4. Step 4: Simplify right side
   457,722x = 443,298,295,442.25
5. Step 5: Solve for x
   x = 443,298,295,442.25/457,722
6. Step 6: Final answer
   x = 968,488.07