Finding the Third Proportional to 50,478.75 and 78,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,478.75 : 78,383.50 = 78,383.50 : x
2. Step 2: Convert to fraction form
   50,478.75/78,383.50 = 78,383.50/x
3. Step 3: Cross multiply
   50,478.75x = 78,383.50 × 78,383.50
4. Step 4: Simplify right side
   50,478.75x = 6,143,973,072.25
5. Step 5: Solve for x
   x = 6,143,973,072.25/50,478.75
6. Step 6: Final answer
   x = 121,714.05