Finding the Third Proportional to 144,116 and 218,158

Step by Step Solution

1. Step 1: Write the proportion equation
   144,116 : 218,158 = 218,158 : x
2. Step 2: Convert to fraction form
   144,116/218,158 = 218,158/x
3. Step 3: Cross multiply
   144,116x = 218,158 × 218,158
4. Step 4: Simplify right side
   144,116x = 47,592,912,964
5. Step 5: Solve for x
   x = 47,592,912,964/144,116
6. Step 6: Final answer
   x = 330,240.31