Finding the Third Proportional to 17,478 and 38,388

Step by Step Solution

1. Step 1: Write the proportion equation
   17,478 : 38,388 = 38,388 : x
2. Step 2: Convert to fraction form
   17,478/38,388 = 38,388/x
3. Step 3: Cross multiply
   17,478x = 38,388 × 38,388
4. Step 4: Simplify right side
   17,478x = 1,473,638,544
5. Step 5: Solve for x
   x = 1,473,638,544/17,478
6. Step 6: Final answer
   x = 84,313.91