Finding the Third Proportional to 4,711.69 and 9,907.69

Step by Step Solution

1. Step 1: Write the proportion equation
   4,711.69 : 9,907.69 = 9,907.69 : x
2. Step 2: Convert to fraction form
   4,711.69/9,907.69 = 9,907.69/x
3. Step 3: Cross multiply
   4,711.69x = 9,907.69 × 9,907.69
4. Step 4: Simplify right side
   4,711.69x = 98,162,271.60
5. Step 5: Solve for x
   x = 98,162,271.60/4,711.69
6. Step 6: Final answer
   x = 20,833.78