Finding the Third Proportional to 72,978.47 and 159,162.47

Step by Step Solution

1. Step 1: Write the proportion equation
   72,978.47 : 159,162.47 = 159,162.47 : x
2. Step 2: Convert to fraction form
   72,978.47/159,162.47 = 159,162.47/x
3. Step 3: Cross multiply
   72,978.47x = 159,162.47 × 159,162.47
4. Step 4: Simplify right side
   72,978.47x = 25,332,691,458.59
5. Step 5: Solve for x
   x = 25,332,691,458.59/72,978.47
6. Step 6: Final answer
   x = 347,125.55