Finding the Third Proportional to 64.88 and 175.69

Step by Step Solution

1. Step 1: Write the proportion equation
   64.88 : 175.69 = 175.69 : x
2. Step 2: Convert to fraction form
   64.88/175.69 = 175.69/x
3. Step 3: Cross multiply
   64.88x = 175.69 × 175.69
4. Step 4: Simplify right side
   64.88x = 30,866.10
5. Step 5: Solve for x
   x = 30,866.10/64.88
6. Step 6: Final answer
   x = 475.78