Finding the Third Proportional to 59,389 and 128,062

Step by Step Solution

1. Step 1: Write the proportion equation
   59,389 : 128,062 = 128,062 : x
2. Step 2: Convert to fraction form
   59,389/128,062 = 128,062/x
3. Step 3: Cross multiply
   59,389x = 128,062 × 128,062
4. Step 4: Simplify right side
   59,389x = 16,399,875,844
5. Step 5: Solve for x
   x = 16,399,875,844/59,389
6. Step 6: Final answer
   x = 276,143.32