Finding the Third Proportional to 446.06 and 978.89

Step by Step Solution

1. Step 1: Write the proportion equation
   446.06 : 978.89 = 978.89 : x
2. Step 2: Convert to fraction form
   446.06/978.89 = 978.89/x
3. Step 3: Cross multiply
   446.06x = 978.89 × 978.89
4. Step 4: Simplify right side
   446.06x = 958,226.86
5. Step 5: Solve for x
   x = 958,226.86/446.06
6. Step 6: Final answer
   x = 2,148.19