Finding the Third Proportional to 59,391 and 128,065

Step by Step Solution

1. Step 1: Write the proportion equation
   59,391 : 128,065 = 128,065 : x
2. Step 2: Convert to fraction form
   59,391/128,065 = 128,065/x
3. Step 3: Cross multiply
   59,391x = 128,065 × 128,065
4. Step 4: Simplify right side
   59,391x = 16,400,644,225
5. Step 5: Solve for x
   x = 16,400,644,225/59,391
6. Step 6: Final answer
   x = 276,146.96