Finding the Third Proportional to 67,722.75 and 140,224.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,722.75 : 140,224.50 = 140,224.50 : x
2. Step 2: Convert to fraction form
   67,722.75/140,224.50 = 140,224.50/x
3. Step 3: Cross multiply
   67,722.75x = 140,224.50 × 140,224.50
4. Step 4: Simplify right side
   67,722.75x = 19,662,910,400.25
5. Step 5: Solve for x
   x = 19,662,910,400.25/67,722.75
6. Step 6: Final answer
   x = 290,344.24