Finding the Third Proportional to 140,987 and 215,945

Step by Step Solution

1. Step 1: Write the proportion equation
   140,987 : 215,945 = 215,945 : x
2. Step 2: Convert to fraction form
   140,987/215,945 = 215,945/x
3. Step 3: Cross multiply
   140,987x = 215,945 × 215,945
4. Step 4: Simplify right side
   140,987x = 46,632,243,025
5. Step 5: Solve for x
   x = 46,632,243,025/140,987
6. Step 6: Final answer
   x = 330,755.62