Finding the Third Proportional to 451.83 and 978.96

Step by Step Solution

1. Step 1: Write the proportion equation
   451.83 : 978.96 = 978.96 : x
2. Step 2: Convert to fraction form
   451.83/978.96 = 978.96/x
3. Step 3: Cross multiply
   451.83x = 978.96 × 978.96
4. Step 4: Simplify right side
   451.83x = 958,364.52
5. Step 5: Solve for x
   x = 958,364.52/451.83
6. Step 6: Final answer
   x = 2,121.08