Finding the Third Proportional to 21,098 and 42,802

Step by Step Solution

1. Step 1: Write the proportion equation
   21,098 : 42,802 = 42,802 : x
2. Step 2: Convert to fraction form
   21,098/42,802 = 42,802/x
3. Step 3: Cross multiply
   21,098x = 42,802 × 42,802
4. Step 4: Simplify right side
   21,098x = 1,832,011,204
5. Step 5: Solve for x
   x = 1,832,011,204/21,098
6. Step 6: Final answer
   x = 86,833.41