Finding the Third Proportional to 59.63 and 128.13

Step by Step Solution

1. Step 1: Write the proportion equation
   59.63 : 128.13 = 128.13 : x
2. Step 2: Convert to fraction form
   59.63/128.13 = 128.13/x
3. Step 3: Cross multiply
   59.63x = 128.13 × 128.13
4. Step 4: Simplify right side
   59.63x = 16,416.02
5. Step 5: Solve for x
   x = 16,416.02/59.63
6. Step 6: Final answer
   x = 275.32