Finding the Third Proportional to 144,225 and 215,140.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,225 : 215,140.50 = 215,140.50 : x
2. Step 2: Convert to fraction form
   144,225/215,140.50 = 215,140.50/x
3. Step 3: Cross multiply
   144,225x = 215,140.50 × 215,140.50
4. Step 4: Simplify right side
   144,225x = 46,285,434,740.25
5. Step 5: Solve for x
   x = 46,285,434,740.25/144,225
6. Step 6: Final answer
   x = 320,925.18