Finding the Third Proportional to 67,139.25 and 141,190.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,139.25 : 141,190.50 = 141,190.50 : x
2. Step 2: Convert to fraction form
   67,139.25/141,190.50 = 141,190.50/x
3. Step 3: Cross multiply
   67,139.25x = 141,190.50 × 141,190.50
4. Step 4: Simplify right side
   67,139.25x = 19,934,757,290.25
5. Step 5: Solve for x
   x = 19,934,757,290.25/67,139.25
6. Step 6: Final answer
   x = 296,916.59