Finding the Third Proportional to 4,807.69 and 9,939.38

Step by Step Solution

1. Step 1: Write the proportion equation
   4,807.69 : 9,939.38 = 9,939.38 : x
2. Step 2: Convert to fraction form
   4,807.69/9,939.38 = 9,939.38/x
3. Step 3: Cross multiply
   4,807.69x = 9,939.38 × 9,939.38
4. Step 4: Simplify right side
   4,807.69x = 98,791,175.39
5. Step 5: Solve for x
   x = 98,791,175.39/4,807.69
6. Step 6: Final answer
   x = 20,548.59