Finding the Third Proportional to 140,969.25 and 215,919

Step by Step Solution

1. Step 1: Write the proportion equation
   140,969.25 : 215,919 = 215,919 : x
2. Step 2: Convert to fraction form
   140,969.25/215,919 = 215,919/x
3. Step 3: Cross multiply
   140,969.25x = 215,919 × 215,919
4. Step 4: Simplify right side
   140,969.25x = 46,621,014,561
5. Step 5: Solve for x
   x = 46,621,014,561/140,969.25
6. Step 6: Final answer
   x = 330,717.62