Finding the Third Proportional to 21,140 and 30,198

Step by Step Solution

1. Step 1: Write the proportion equation
   21,140 : 30,198 = 30,198 : x
2. Step 2: Convert to fraction form
   21,140/30,198 = 30,198/x
3. Step 3: Cross multiply
   21,140x = 30,198 × 30,198
4. Step 4: Simplify right side
   21,140x = 911,919,204
5. Step 5: Solve for x
   x = 911,919,204/21,140
6. Step 6: Final answer
   x = 43,137.14