Finding the Third Proportional to 15,433.50 and 20,912.25

Step by Step Solution

1. Step 1: Write the proportion equation
   15,433.50 : 20,912.25 = 20,912.25 : x
2. Step 2: Convert to fraction form
   15,433.50/20,912.25 = 20,912.25/x
3. Step 3: Cross multiply
   15,433.50x = 20,912.25 × 20,912.25
4. Step 4: Simplify right side
   15,433.50x = 437,322,200.06
5. Step 5: Solve for x
   x = 437,322,200.06/15,433.50
6. Step 6: Final answer
   x = 28,335.91