Finding the Third Proportional to 451,404 and 685,968

Step by Step Solution

1. Step 1: Write the proportion equation
   451,404 : 685,968 = 685,968 : x
2. Step 2: Convert to fraction form
   451,404/685,968 = 685,968/x
3. Step 3: Cross multiply
   451,404x = 685,968 × 685,968
4. Step 4: Simplify right side
   451,404x = 470,552,097,024
5. Step 5: Solve for x
   x = 470,552,097,024/451,404
6. Step 6: Final answer
   x = 1,042,418.98