Finding the Third Proportional to 16,978 and 28,293

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978 : 28,293 = 28,293 : x
2. Step 2: Convert to fraction form
   16,978/28,293 = 28,293/x
3. Step 3: Cross multiply
   16,978x = 28,293 × 28,293
4. Step 4: Simplify right side
   16,978x = 800,493,849
5. Step 5: Solve for x
   x = 800,493,849/16,978
6. Step 6: Final answer
   x = 47,148.89