Finding the Third Proportional to 67,285 and 144,226

Step by Step Solution

1. Step 1: Write the proportion equation
   67,285 : 144,226 = 144,226 : x
2. Step 2: Convert to fraction form
   67,285/144,226 = 144,226/x
3. Step 3: Cross multiply
   67,285x = 144,226 × 144,226
4. Step 4: Simplify right side
   67,285x = 20,801,139,076
5. Step 5: Solve for x
   x = 20,801,139,076/67,285
6. Step 6: Final answer
   x = 309,149.72