Finding the Third Proportional to 17,128 and 35,440

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128 : 35,440 = 35,440 : x
2. Step 2: Convert to fraction form
   17,128/35,440 = 35,440/x
3. Step 3: Cross multiply
   17,128x = 35,440 × 35,440
4. Step 4: Simplify right side
   17,128x = 1,255,993,600
5. Step 5: Solve for x
   x = 1,255,993,600/17,128
6. Step 6: Final answer
   x = 73,329.85