Finding the Third Proportional to 128.14 and 264.83

Step by Step Solution

1. Step 1: Write the proportion equation
   128.14 : 264.83 = 264.83 : x
2. Step 2: Convert to fraction form
   128.14/264.83 = 264.83/x
3. Step 3: Cross multiply
   128.14x = 264.83 × 264.83
4. Step 4: Simplify right side
   128.14x = 70,136.00
5. Step 5: Solve for x
   x = 70,136.00/128.14
6. Step 6: Final answer
   x = 547.32