Finding the Third Proportional to 51,081.50 and 79,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,081.50 : 79,279.50 = 79,279.50 : x
2. Step 2: Convert to fraction form
   51,081.50/79,279.50 = 79,279.50/x
3. Step 3: Cross multiply
   51,081.50x = 79,279.50 × 79,279.50
4. Step 4: Simplify right side
   51,081.50x = 6,285,239,120.25
5. Step 5: Solve for x
   x = 6,285,239,120.25/51,081.50
6. Step 6: Final answer
   x = 123,043.35