Finding the Third Proportional to 72,099 and 154,161

Step by Step Solution

1. Step 1: Write the proportion equation
   72,099 : 154,161 = 154,161 : x
2. Step 2: Convert to fraction form
   72,099/154,161 = 154,161/x
3. Step 3: Cross multiply
   72,099x = 154,161 × 154,161
4. Step 4: Simplify right side
   72,099x = 23,765,613,921
5. Step 5: Solve for x
   x = 23,765,613,921/72,099
6. Step 6: Final answer
   x = 329,624.74