Finding the Third Proportional to 7,978 and 17,392

Step by Step Solution

1. Step 1: Write the proportion equation
   7,978 : 17,392 = 17,392 : x
2. Step 2: Convert to fraction form
   7,978/17,392 = 17,392/x
3. Step 3: Cross multiply
   7,978x = 17,392 × 17,392
4. Step 4: Simplify right side
   7,978x = 302,481,664
5. Step 5: Solve for x
   x = 302,481,664/7,978
6. Step 6: Final answer
   x = 37,914.47