Finding the Third Proportional to 17,920 and 35,399

Step by Step Solution

1. Step 1: Write the proportion equation
   17,920 : 35,399 = 35,399 : x
2. Step 2: Convert to fraction form
   17,920/35,399 = 35,399/x
3. Step 3: Cross multiply
   17,920x = 35,399 × 35,399
4. Step 4: Simplify right side
   17,920x = 1,253,089,201
5. Step 5: Solve for x
   x = 1,253,089,201/17,920
6. Step 6: Final answer
   x = 69,926.85