Finding the Third Proportional to 59,659 and 128,460

Step by Step Solution

1. Step 1: Write the proportion equation
   59,659 : 128,460 = 128,460 : x
2. Step 2: Convert to fraction form
   59,659/128,460 = 128,460/x
3. Step 3: Cross multiply
   59,659x = 128,460 × 128,460
4. Step 4: Simplify right side
   59,659x = 16,501,971,600
5. Step 5: Solve for x
   x = 16,501,971,600/59,659
6. Step 6: Final answer
   x = 276,604.90