Finding the Third Proportional to 12,979.50 and 20,334.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979.50 : 20,334.38 = 20,334.38 : x
2. Step 2: Convert to fraction form
   12,979.50/20,334.38 = 20,334.38/x
3. Step 3: Cross multiply
   12,979.50x = 20,334.38 × 20,334.38
4. Step 4: Simplify right side
   12,979.50x = 413,486,806.64
5. Step 5: Solve for x
   x = 413,486,806.64/12,979.50
6. Step 6: Final answer
   x = 31,856.91