Finding the Third Proportional to 144,292 and 221,910

Step by Step Solution

1. Step 1: Write the proportion equation
   144,292 : 221,910 = 221,910 : x
2. Step 2: Convert to fraction form
   144,292/221,910 = 221,910/x
3. Step 3: Cross multiply
   144,292x = 221,910 × 221,910
4. Step 4: Simplify right side
   144,292x = 49,244,048,100
5. Step 5: Solve for x
   x = 49,244,048,100/144,292
6. Step 6: Final answer
   x = 341,280.52