Finding the Third Proportional to 8,472 and 17,912

Step by Step Solution

1. Step 1: Write the proportion equation
   8,472 : 17,912 = 17,912 : x
2. Step 2: Convert to fraction form
   8,472/17,912 = 17,912/x
3. Step 3: Cross multiply
   8,472x = 17,912 × 17,912
4. Step 4: Simplify right side
   8,472x = 320,839,744
5. Step 5: Solve for x
   x = 320,839,744/8,472
6. Step 6: Final answer
   x = 37,870.60