Finding the Third Proportional to 711.50 and 961.50

Step by Step Solution

1. Step 1: Write the proportion equation
   711.50 : 961.50 = 961.50 : x
2. Step 2: Convert to fraction form
   711.50/961.50 = 961.50/x
3. Step 3: Cross multiply
   711.50x = 961.50 × 961.50
4. Step 4: Simplify right side
   711.50x = 924,482.25
5. Step 5: Solve for x
   x = 924,482.25/711.50
6. Step 6: Final answer
   x = 1,299.34