Finding the Third Proportional to 448.69 and 980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   448.69 : 980.72 = 980.72 : x
2. Step 2: Convert to fraction form
   448.69/980.72 = 980.72/x
3. Step 3: Cross multiply
   448.69x = 980.72 × 980.72
4. Step 4: Simplify right side
   448.69x = 961,809.27
5. Step 5: Solve for x
   x = 961,809.27/448.69
6. Step 6: Final answer
   x = 2,143.61