Finding the Third Proportional to 49,839.75 and 79,951.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,839.75 : 79,951.50 = 79,951.50 : x
2. Step 2: Convert to fraction form
   49,839.75/79,951.50 = 79,951.50/x
3. Step 3: Cross multiply
   49,839.75x = 79,951.50 × 79,951.50
4. Step 4: Simplify right side
   49,839.75x = 6,392,242,352.25
5. Step 5: Solve for x
   x = 6,392,242,352.25/49,839.75
6. Step 6: Final answer
   x = 128,255.91