Finding the Third Proportional to 4,475.09 and 9,603.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,475.09 : 9,603.72 = 9,603.72 : x
2. Step 2: Convert to fraction form
   4,475.09/9,603.72 = 9,603.72/x
3. Step 3: Cross multiply
   4,475.09x = 9,603.72 × 9,603.72
4. Step 4: Simplify right side
   4,475.09x = 92,231,451.34
5. Step 5: Solve for x
   x = 92,231,451.34/4,475.09
6. Step 6: Final answer
   x = 20,609.96