Finding the Third Proportional to 9,436.50 and 20,509.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,436.50 : 20,509.88 = 20,509.88 : x
2. Step 2: Convert to fraction form
   9,436.50/20,509.88 = 20,509.88/x
3. Step 3: Cross multiply
   9,436.50x = 20,509.88 × 20,509.88
4. Step 4: Simplify right side
   9,436.50x = 420,654,972.52
5. Step 5: Solve for x
   x = 420,654,972.52/9,436.50
6. Step 6: Final answer
   x = 44,577.44