Finding the Third Proportional to 13,406.50 and 19,951

Step by Step Solution

1. Step 1: Write the proportion equation
   13,406.50 : 19,951 = 19,951 : x
2. Step 2: Convert to fraction form
   13,406.50/19,951 = 19,951/x
3. Step 3: Cross multiply
   13,406.50x = 19,951 × 19,951
4. Step 4: Simplify right side
   13,406.50x = 398,042,401
5. Step 5: Solve for x
   x = 398,042,401/13,406.50
6. Step 6: Final answer
   x = 29,690.25