Finding the Third Proportional to 67,217.25 and 146,220

Step by Step Solution

1. Step 1: Write the proportion equation
   67,217.25 : 146,220 = 146,220 : x
2. Step 2: Convert to fraction form
   67,217.25/146,220 = 146,220/x
3. Step 3: Cross multiply
   67,217.25x = 146,220 × 146,220
4. Step 4: Simplify right side
   67,217.25x = 21,380,288,400
5. Step 5: Solve for x
   x = 21,380,288,400/67,217.25
6. Step 6: Final answer
   x = 318,077.40