Finding the Third Proportional to 78,777.56 and 169,993.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,777.56 : 169,993.69 = 169,993.69 : x
2. Step 2: Convert to fraction form
   78,777.56/169,993.69 = 169,993.69/x
3. Step 3: Cross multiply
   78,777.56x = 169,993.69 × 169,993.69
4. Step 4: Simplify right side
   78,777.56x = 28,897,853,789.85
5. Step 5: Solve for x
   x = 28,897,853,789.85/78,777.56
6. Step 6: Final answer
   x = 366,828.48