Finding the Third Proportional to 50,940.50 and 78,719

Step by Step Solution

1. Step 1: Write the proportion equation
   50,940.50 : 78,719 = 78,719 : x
2. Step 2: Convert to fraction form
   50,940.50/78,719 = 78,719/x
3. Step 3: Cross multiply
   50,940.50x = 78,719 × 78,719
4. Step 4: Simplify right side
   50,940.50x = 6,196,680,961
5. Step 5: Solve for x
   x = 6,196,680,961/50,940.50
6. Step 6: Final answer
   x = 121,645.47