Finding the Third Proportional to 450.75 and 976.78

Step by Step Solution

1. Step 1: Write the proportion equation
   450.75 : 976.78 = 976.78 : x
2. Step 2: Convert to fraction form
   450.75/976.78 = 976.78/x
3. Step 3: Cross multiply
   450.75x = 976.78 × 976.78
4. Step 4: Simplify right side
   450.75x = 954,101.61
5. Step 5: Solve for x
   x = 954,101.61/450.75
6. Step 6: Final answer
   x = 2,116.70