Finding the Third Proportional to 17,920 and 35,912

Step by Step Solution

1. Step 1: Write the proportion equation
   17,920 : 35,912 = 35,912 : x
2. Step 2: Convert to fraction form
   17,920/35,912 = 35,912/x
3. Step 3: Cross multiply
   17,920x = 35,912 × 35,912
4. Step 4: Simplify right side
   17,920x = 1,289,671,744
5. Step 5: Solve for x
   x = 1,289,671,744/17,920
6. Step 6: Final answer
   x = 71,968.29