Finding the Third Proportional to 9,351.75 and 19,999.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,351.75 : 19,999.69 = 19,999.69 : x
2. Step 2: Convert to fraction form
   9,351.75/19,999.69 = 19,999.69/x
3. Step 3: Cross multiply
   9,351.75x = 19,999.69 × 19,999.69
4. Step 4: Simplify right side
   9,351.75x = 399,987,500.10
5. Step 5: Solve for x
   x = 399,987,500.10/9,351.75
6. Step 6: Final answer
   x = 42,771.41