Finding the Third Proportional to 22,099.50 and 30,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,099.50 : 30,721.50 = 30,721.50 : x
2. Step 2: Convert to fraction form
   22,099.50/30,721.50 = 30,721.50/x
3. Step 3: Cross multiply
   22,099.50x = 30,721.50 × 30,721.50
4. Step 4: Simplify right side
   22,099.50x = 943,810,562.25
5. Step 5: Solve for x
   x = 943,810,562.25/22,099.50
6. Step 6: Final answer
   x = 42,707.33