Finding the Third Proportional to 21,801 and 30,700

Step by Step Solution

1. Step 1: Write the proportion equation
   21,801 : 30,700 = 30,700 : x
2. Step 2: Convert to fraction form
   21,801/30,700 = 30,700/x
3. Step 3: Cross multiply
   21,801x = 30,700 × 30,700
4. Step 4: Simplify right side
   21,801x = 942,490,000
5. Step 5: Solve for x
   x = 942,490,000/21,801
6. Step 6: Final answer
   x = 43,231.50