Finding the Third Proportional to 17,916 and 39,012

Step by Step Solution

1. Step 1: Write the proportion equation
   17,916 : 39,012 = 39,012 : x
2. Step 2: Convert to fraction form
   17,916/39,012 = 39,012/x
3. Step 3: Cross multiply
   17,916x = 39,012 × 39,012
4. Step 4: Simplify right side
   17,916x = 1,521,936,144
5. Step 5: Solve for x
   x = 1,521,936,144/17,916
6. Step 6: Final answer
   x = 84,948.43