Finding the Third Proportional to 5,080.50 and 10,424.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,080.50 : 10,424.25 = 10,424.25 : x
2. Step 2: Convert to fraction form
   5,080.50/10,424.25 = 10,424.25/x
3. Step 3: Cross multiply
   5,080.50x = 10,424.25 × 10,424.25
4. Step 4: Simplify right side
   5,080.50x = 108,664,988.06
5. Step 5: Solve for x
   x = 108,664,988.06/5,080.50
6. Step 6: Final answer
   x = 21,388.64