Finding the Third Proportional to 12,588 and 20,028

Step by Step Solution

1. Step 1: Write the proportion equation
   12,588 : 20,028 = 20,028 : x
2. Step 2: Convert to fraction form
   12,588/20,028 = 20,028/x
3. Step 3: Cross multiply
   12,588x = 20,028 × 20,028
4. Step 4: Simplify right side
   12,588x = 401,120,784
5. Step 5: Solve for x
   x = 401,120,784/12,588
6. Step 6: Final answer
   x = 31,865.33