Finding the Third Proportional to 208,012 and 447,144

Step by Step Solution

1. Step 1: Write the proportion equation
   208,012 : 447,144 = 447,144 : x
2. Step 2: Convert to fraction form
   208,012/447,144 = 447,144/x
3. Step 3: Cross multiply
   208,012x = 447,144 × 447,144
4. Step 4: Simplify right side
   208,012x = 199,937,756,736
5. Step 5: Solve for x
   x = 199,937,756,736/208,012
6. Step 6: Final answer
   x = 961,183.76