Finding the Third Proportional to 85.25 and 130.63

Step by Step Solution

1. Step 1: Write the proportion equation
   85.25 : 130.63 = 130.63 : x
2. Step 2: Convert to fraction form
   85.25/130.63 = 130.63/x
3. Step 3: Cross multiply
   85.25x = 130.63 × 130.63
4. Step 4: Simplify right side
   85.25x = 17,062.89
5. Step 5: Solve for x
   x = 17,062.89/85.25
6. Step 6: Final answer
   x = 200.15