Finding the Third Proportional to 72,147 and 154,662

Step by Step Solution

1. Step 1: Write the proportion equation
   72,147 : 154,662 = 154,662 : x
2. Step 2: Convert to fraction form
   72,147/154,662 = 154,662/x
3. Step 3: Cross multiply
   72,147x = 154,662 × 154,662
4. Step 4: Simplify right side
   72,147x = 23,920,334,244
5. Step 5: Solve for x
   x = 23,920,334,244/72,147
6. Step 6: Final answer
   x = 331,549.95