Finding the Third Proportional to 16,978.50 and 36,147

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.50 : 36,147 = 36,147 : x
2. Step 2: Convert to fraction form
   16,978.50/36,147 = 36,147/x
3. Step 3: Cross multiply
   16,978.50x = 36,147 × 36,147
4. Step 4: Simplify right side
   16,978.50x = 1,306,605,609
5. Step 5: Solve for x
   x = 1,306,605,609/16,978.50
6. Step 6: Final answer
   x = 76,956.48