Finding the Third Proportional to 72,469 and 154,890

Step by Step Solution

1. Step 1: Write the proportion equation
   72,469 : 154,890 = 154,890 : x
2. Step 2: Convert to fraction form
   72,469/154,890 = 154,890/x
3. Step 3: Cross multiply
   72,469x = 154,890 × 154,890
4. Step 4: Simplify right side
   72,469x = 23,990,912,100
5. Step 5: Solve for x
   x = 23,990,912,100/72,469
6. Step 6: Final answer
   x = 331,050.69