Finding the Third Proportional to 72,907 and 159,530

Step by Step Solution

1. Step 1: Write the proportion equation
   72,907 : 159,530 = 159,530 : x
2. Step 2: Convert to fraction form
   72,907/159,530 = 159,530/x
3. Step 3: Cross multiply
   72,907x = 159,530 × 159,530
4. Step 4: Simplify right side
   72,907x = 25,449,820,900
5. Step 5: Solve for x
   x = 25,449,820,900/72,907
6. Step 6: Final answer
   x = 349,072.39