Finding the Third Proportional to 12,983.50 and 20,143

Step by Step Solution

1. Step 1: Write the proportion equation
   12,983.50 : 20,143 = 20,143 : x
2. Step 2: Convert to fraction form
   12,983.50/20,143 = 20,143/x
3. Step 3: Cross multiply
   12,983.50x = 20,143 × 20,143
4. Step 4: Simplify right side
   12,983.50x = 405,740,449
5. Step 5: Solve for x
   x = 405,740,449/12,983.50
6. Step 6: Final answer
   x = 31,250.47