Finding the Third Proportional to 5,424.05 and 10,998.70

Step by Step Solution

1. Step 1: Write the proportion equation
   5,424.05 : 10,998.70 = 10,998.70 : x
2. Step 2: Convert to fraction form
   5,424.05/10,998.70 = 10,998.70/x
3. Step 3: Cross multiply
   5,424.05x = 10,998.70 × 10,998.70
4. Step 4: Simplify right side
   5,424.05x = 120,971,470.43
5. Step 5: Solve for x
   x = 120,971,470.43/5,424.05
6. Step 6: Final answer
   x = 22,302.81