Finding the Third Proportional to 67,512.38 and 145,413

Step by Step Solution

1. Step 1: Write the proportion equation
   67,512.38 : 145,413 = 145,413 : x
2. Step 2: Convert to fraction form
   67,512.38/145,413 = 145,413/x
3. Step 3: Cross multiply
   67,512.38x = 145,413 × 145,413
4. Step 4: Simplify right side
   67,512.38x = 21,144,940,569
5. Step 5: Solve for x
   x = 21,144,940,569/67,512.38
6. Step 6: Final answer
   x = 313,200.96