Finding the Third Proportional to 111,559.78 and 169,951.92

Step by Step Solution

1. Step 1: Write the proportion equation
   111,559.78 : 169,951.92 = 169,951.92 : x
2. Step 2: Convert to fraction form
   111,559.78/169,951.92 = 169,951.92/x
3. Step 3: Cross multiply
   111,559.78x = 169,951.92 × 169,951.92
4. Step 4: Simplify right side
   111,559.78x = 28,883,655,749.01
5. Step 5: Solve for x
   x = 28,883,655,749.01/111,559.78
6. Step 6: Final answer
   x = 258,907.43