Finding the Third Proportional to 72,118 and 154,638

Step by Step Solution

1. Step 1: Write the proportion equation
   72,118 : 154,638 = 154,638 : x
2. Step 2: Convert to fraction form
   72,118/154,638 = 154,638/x
3. Step 3: Cross multiply
   72,118x = 154,638 × 154,638
4. Step 4: Simplify right side
   72,118x = 23,912,911,044
5. Step 5: Solve for x
   x = 23,912,911,044/72,118
6. Step 6: Final answer
   x = 331,580.34