Finding the Third Proportional to 16,279 and 33,421

Step by Step Solution

1. Step 1: Write the proportion equation
   16,279 : 33,421 = 33,421 : x
2. Step 2: Convert to fraction form
   16,279/33,421 = 33,421/x
3. Step 3: Cross multiply
   16,279x = 33,421 × 33,421
4. Step 4: Simplify right side
   16,279x = 1,116,963,241
5. Step 5: Solve for x
   x = 1,116,963,241/16,279
6. Step 6: Final answer
   x = 68,613.75