Finding the Third Proportional to 74,499 and 159,078

Step by Step Solution

1. Step 1: Write the proportion equation
   74,499 : 159,078 = 159,078 : x
2. Step 2: Convert to fraction form
   74,499/159,078 = 159,078/x
3. Step 3: Cross multiply
   74,499x = 159,078 × 159,078
4. Step 4: Simplify right side
   74,499x = 25,305,810,084
5. Step 5: Solve for x
   x = 25,305,810,084/74,499
6. Step 6: Final answer
   x = 339,679.86