Finding the Third Proportional to 67,711.57 and 145,828.48

Step by Step Solution

1. Step 1: Write the proportion equation
   67,711.57 : 145,828.48 = 145,828.48 : x
2. Step 2: Convert to fraction form
   67,711.57/145,828.48 = 145,828.48/x
3. Step 3: Cross multiply
   67,711.57x = 145,828.48 × 145,828.48
4. Step 4: Simplify right side
   67,711.57x = 21,265,944,576.54
5. Step 5: Solve for x
   x = 21,265,944,576.54/67,711.57
6. Step 6: Final answer
   x = 314,066.63