Finding the Third Proportional to 72,690 and 154,185

Step by Step Solution

1. Step 1: Write the proportion equation
   72,690 : 154,185 = 154,185 : x
2. Step 2: Convert to fraction form
   72,690/154,185 = 154,185/x
3. Step 3: Cross multiply
   72,690x = 154,185 × 154,185
4. Step 4: Simplify right side
   72,690x = 23,773,014,225
5. Step 5: Solve for x
   x = 23,773,014,225/72,690
6. Step 6: Final answer
   x = 327,046.56