Finding the Third Proportional to 4,713.88 and 9,810.69

Step by Step Solution

1. Step 1: Write the proportion equation
   4,713.88 : 9,810.69 = 9,810.69 : x
2. Step 2: Convert to fraction form
   4,713.88/9,810.69 = 9,810.69/x
3. Step 3: Cross multiply
   4,713.88x = 9,810.69 × 9,810.69
4. Step 4: Simplify right side
   4,713.88x = 96,249,589.22
5. Step 5: Solve for x
   x = 96,249,589.22/4,713.88
6. Step 6: Final answer
   x = 20,418.36