Finding the Third Proportional to 20,023.50 and 21,679.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,023.50 : 21,679.50 = 21,679.50 : x
2. Step 2: Convert to fraction form
   20,023.50/21,679.50 = 21,679.50/x
3. Step 3: Cross multiply
   20,023.50x = 21,679.50 × 21,679.50
4. Step 4: Simplify right side
   20,023.50x = 470,000,720.25
5. Step 5: Solve for x
   x = 470,000,720.25/20,023.50
6. Step 6: Final answer
   x = 23,472.46