Finding the Third Proportional to 72,245 and 154,505

Step by Step Solution

1. Step 1: Write the proportion equation
   72,245 : 154,505 = 154,505 : x
2. Step 2: Convert to fraction form
   72,245/154,505 = 154,505/x
3. Step 3: Cross multiply
   72,245x = 154,505 × 154,505
4. Step 4: Simplify right side
   72,245x = 23,871,795,025
5. Step 5: Solve for x
   x = 23,871,795,025/72,245
6. Step 6: Final answer
   x = 330,428.33