Finding the Third Proportional to 140,076.38 and 209,619.56

Step by Step Solution

1. Step 1: Write the proportion equation
   140,076.38 : 209,619.56 = 209,619.56 : x
2. Step 2: Convert to fraction form
   140,076.38/209,619.56 = 209,619.56/x
3. Step 3: Cross multiply
   140,076.38x = 209,619.56 × 209,619.56
4. Step 4: Simplify right side
   140,076.38x = 43,940,360,982.69
5. Step 5: Solve for x
   x = 43,940,360,982.69/140,076.38
6. Step 6: Final answer
   x = 313,688.59