Finding the Third Proportional to 59,270 and 128,422

Step by Step Solution

1. Step 1: Write the proportion equation
   59,270 : 128,422 = 128,422 : x
2. Step 2: Convert to fraction form
   59,270/128,422 = 128,422/x
3. Step 3: Cross multiply
   59,270x = 128,422 × 128,422
4. Step 4: Simplify right side
   59,270x = 16,492,210,084
5. Step 5: Solve for x
   x = 16,492,210,084/59,270
6. Step 6: Final answer
   x = 278,255.61