Finding the Third Proportional to 68,578.31 and 146,667.38

Step by Step Solution

1. Step 1: Write the proportion equation
   68,578.31 : 146,667.38 = 146,667.38 : x
2. Step 2: Convert to fraction form
   68,578.31/146,667.38 = 146,667.38/x
3. Step 3: Cross multiply
   68,578.31x = 146,667.38 × 146,667.38
4. Step 4: Simplify right side
   68,578.31x = 21,511,318,889.39
5. Step 5: Solve for x
   x = 21,511,318,889.39/68,578.31
6. Step 6: Final answer
   x = 313,675.24