Finding the Third Proportional to 65.94 and 143.69

Step by Step Solution

1. Step 1: Write the proportion equation
   65.94 : 143.69 = 143.69 : x
2. Step 2: Convert to fraction form
   65.94/143.69 = 143.69/x
3. Step 3: Cross multiply
   65.94x = 143.69 × 143.69
4. Step 4: Simplify right side
   65.94x = 20,646.10
5. Step 5: Solve for x
   x = 20,646.10/65.94
6. Step 6: Final answer
   x = 313.12