Finding the Third Proportional to 451,603.69 and 664,930.69

Step by Step Solution

1. Step 1: Write the proportion equation
   451,603.69 : 664,930.69 = 664,930.69 : x
2. Step 2: Convert to fraction form
   451,603.69/664,930.69 = 664,930.69/x
3. Step 3: Cross multiply
   451,603.69x = 664,930.69 × 664,930.69
4. Step 4: Simplify right side
   451,603.69x = 442,132,819,179.22
5. Step 5: Solve for x
   x = 442,132,819,179.22/451,603.69
6. Step 6: Final answer
   x = 979,028.36