Finding the Third Proportional to 140,371.50 and 215,979

Step by Step Solution

1. Step 1: Write the proportion equation
   140,371.50 : 215,979 = 215,979 : x
2. Step 2: Convert to fraction form
   140,371.50/215,979 = 215,979/x
3. Step 3: Cross multiply
   140,371.50x = 215,979 × 215,979
4. Step 4: Simplify right side
   140,371.50x = 46,646,928,441
5. Step 5: Solve for x
   x = 46,646,928,441/140,371.50
6. Step 6: Final answer
   x = 332,310.54