Finding the Third Proportional to 931.50 and 958.50

Step by Step Solution

1. Step 1: Write the proportion equation
   931.50 : 958.50 = 958.50 : x
2. Step 2: Convert to fraction form
   931.50/958.50 = 958.50/x
3. Step 3: Cross multiply
   931.50x = 958.50 × 958.50
4. Step 4: Simplify right side
   931.50x = 918,722.25
5. Step 5: Solve for x
   x = 918,722.25/931.50
6. Step 6: Final answer
   x = 986.28