Finding the Third Proportional to 72,540 and 151,640

Step by Step Solution

1. Step 1: Write the proportion equation
   72,540 : 151,640 = 151,640 : x
2. Step 2: Convert to fraction form
   72,540/151,640 = 151,640/x
3. Step 3: Cross multiply
   72,540x = 151,640 × 151,640
4. Step 4: Simplify right side
   72,540x = 22,994,689,600
5. Step 5: Solve for x
   x = 22,994,689,600/72,540
6. Step 6: Final answer
   x = 316,993.24