Finding the Third Proportional to 144,158 and 215,054

Step by Step Solution

1. Step 1: Write the proportion equation
   144,158 : 215,054 = 215,054 : x
2. Step 2: Convert to fraction form
   144,158/215,054 = 215,054/x
3. Step 3: Cross multiply
   144,158x = 215,054 × 215,054
4. Step 4: Simplify right side
   144,158x = 46,248,222,916
5. Step 5: Solve for x
   x = 46,248,222,916/144,158
6. Step 6: Final answer
   x = 320,816.21