Finding the Third Proportional to 30,821 and 63,098

Step by Step Solution

1. Step 1: Write the proportion equation
   30,821 : 63,098 = 63,098 : x
2. Step 2: Convert to fraction form
   30,821/63,098 = 63,098/x
3. Step 3: Cross multiply
   30,821x = 63,098 × 63,098
4. Step 4: Simplify right side
   30,821x = 3,981,357,604
5. Step 5: Solve for x
   x = 3,981,357,604/30,821
6. Step 6: Final answer
   x = 129,176.78