Finding the Third Proportional to 10,403 and 21,670

Step by Step Solution

1. Step 1: Write the proportion equation
   10,403 : 21,670 = 21,670 : x
2. Step 2: Convert to fraction form
   10,403/21,670 = 21,670/x
3. Step 3: Cross multiply
   10,403x = 21,670 × 21,670
4. Step 4: Simplify right side
   10,403x = 469,588,900
5. Step 5: Solve for x
   x = 469,588,900/10,403
6. Step 6: Final answer
   x = 45,139.76