Finding the Third Proportional to 21,990 and 34,089

Step by Step Solution

1. Step 1: Write the proportion equation
   21,990 : 34,089 = 34,089 : x
2. Step 2: Convert to fraction form
   21,990/34,089 = 34,089/x
3. Step 3: Cross multiply
   21,990x = 34,089 × 34,089
4. Step 4: Simplify right side
   21,990x = 1,162,059,921
5. Step 5: Solve for x
   x = 1,162,059,921/21,990
6. Step 6: Final answer
   x = 52,844.93