Finding the Third Proportional to 5,401.69 and 10,621.13

Step by Step Solution

1. Step 1: Write the proportion equation
   5,401.69 : 10,621.13 = 10,621.13 : x
2. Step 2: Convert to fraction form
   5,401.69/10,621.13 = 10,621.13/x
3. Step 3: Cross multiply
   5,401.69x = 10,621.13 × 10,621.13
4. Step 4: Simplify right side
   5,401.69x = 112,808,296.27
5. Step 5: Solve for x
   x = 112,808,296.27/5,401.69
6. Step 6: Final answer
   x = 20,883.90