Finding the Third Proportional to 67,116.50 and 144,740.75

Step by Step Solution

1. Step 1: Write the proportion equation
   67,116.50 : 144,740.75 = 144,740.75 : x
2. Step 2: Convert to fraction form
   67,116.50/144,740.75 = 144,740.75/x
3. Step 3: Cross multiply
   67,116.50x = 144,740.75 × 144,740.75
4. Step 4: Simplify right side
   67,116.50x = 20,949,884,710.56
5. Step 5: Solve for x
   x = 20,949,884,710.56/67,116.50
6. Step 6: Final answer
   x = 312,142.09