Finding the Third Proportional to 4,245.86 and 9,106.80

Step by Step Solution

1. Step 1: Write the proportion equation
   4,245.86 : 9,106.80 = 9,106.80 : x
2. Step 2: Convert to fraction form
   4,245.86/9,106.80 = 9,106.80/x
3. Step 3: Cross multiply
   4,245.86x = 9,106.80 × 9,106.80
4. Step 4: Simplify right side
   4,245.86x = 82,933,891.62
5. Step 5: Solve for x
   x = 82,933,891.62/4,245.86
6. Step 6: Final answer
   x = 19,532.91