Finding the Third Proportional to 51,716.25 and 79,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,716.25 : 79,078.50 = 79,078.50 : x
2. Step 2: Convert to fraction form
   51,716.25/79,078.50 = 79,078.50/x
3. Step 3: Cross multiply
   51,716.25x = 79,078.50 × 79,078.50
4. Step 4: Simplify right side
   51,716.25x = 6,253,409,162.25
5. Step 5: Solve for x
   x = 6,253,409,162.25/51,716.25
6. Step 6: Final answer
   x = 120,917.68