Finding the Third Proportional to 680 and 956.50

Step by Step Solution

1. Step 1: Write the proportion equation
   680 : 956.50 = 956.50 : x
2. Step 2: Convert to fraction form
   680/956.50 = 956.50/x
3. Step 3: Cross multiply
   680x = 956.50 × 956.50
4. Step 4: Simplify right side
   680x = 914,892.25
5. Step 5: Solve for x
   x = 914,892.25/680
6. Step 6: Final answer
   x = 1,345.43