Finding the Third Proportional to 5,043 and 10,221

Step by Step Solution

1. Step 1: Write the proportion equation
   5,043 : 10,221 = 10,221 : x
2. Step 2: Convert to fraction form
   5,043/10,221 = 10,221/x
3. Step 3: Cross multiply
   5,043x = 10,221 × 10,221
4. Step 4: Simplify right side
   5,043x = 104,468,841
5. Step 5: Solve for x
   x = 104,468,841/5,043
6. Step 6: Final answer
   x = 20,715.61