Finding the Third Proportional to 13,960.69 and 20,666.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,960.69 : 20,666.81 = 20,666.81 : x
2. Step 2: Convert to fraction form
   13,960.69/20,666.81 = 20,666.81/x
3. Step 3: Cross multiply
   13,960.69x = 20,666.81 × 20,666.81
4. Step 4: Simplify right side
   13,960.69x = 427,117,138.91
5. Step 5: Solve for x
   x = 427,117,138.91/13,960.69
6. Step 6: Final answer
   x = 30,594.28