Finding the Third Proportional to 21,730 and 34,540

Step by Step Solution

1. Step 1: Write the proportion equation
   21,730 : 34,540 = 34,540 : x
2. Step 2: Convert to fraction form
   21,730/34,540 = 34,540/x
3. Step 3: Cross multiply
   21,730x = 34,540 × 34,540
4. Step 4: Simplify right side
   21,730x = 1,193,011,600
5. Step 5: Solve for x
   x = 1,193,011,600/21,730
6. Step 6: Final answer
   x = 54,901.59