Finding the Third Proportional to 718.50 and 841.69

Step by Step Solution

1. Step 1: Write the proportion equation
   718.50 : 841.69 = 841.69 : x
2. Step 2: Convert to fraction form
   718.50/841.69 = 841.69/x
3. Step 3: Cross multiply
   718.50x = 841.69 × 841.69
4. Step 4: Simplify right side
   718.50x = 708,437.85
5. Step 5: Solve for x
   x = 708,437.85/718.50
6. Step 6: Final answer
   x = 986.00