Finding the Third Proportional to 50,940.75 and 78,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,940.75 : 78,719.50 = 78,719.50 : x
2. Step 2: Convert to fraction form
   50,940.75/78,719.50 = 78,719.50/x
3. Step 3: Cross multiply
   50,940.75x = 78,719.50 × 78,719.50
4. Step 4: Simplify right side
   50,940.75x = 6,196,759,680.25
5. Step 5: Solve for x
   x = 6,196,759,680.25/50,940.75
6. Step 6: Final answer
   x = 121,646.42