Finding the Third Proportional to 144,216 and 228,132

Step by Step Solution

1. Step 1: Write the proportion equation
   144,216 : 228,132 = 228,132 : x
2. Step 2: Convert to fraction form
   144,216/228,132 = 228,132/x
3. Step 3: Cross multiply
   144,216x = 228,132 × 228,132
4. Step 4: Simplify right side
   144,216x = 52,044,209,424
5. Step 5: Solve for x
   x = 52,044,209,424/144,216
6. Step 6: Final answer
   x = 360,876.81