Finding the Third Proportional to 50,855.50 and 78,745

Step by Step Solution

1. Step 1: Write the proportion equation
   50,855.50 : 78,745 = 78,745 : x
2. Step 2: Convert to fraction form
   50,855.50/78,745 = 78,745/x
3. Step 3: Cross multiply
   50,855.50x = 78,745 × 78,745
4. Step 4: Simplify right side
   50,855.50x = 6,200,775,025
5. Step 5: Solve for x
   x = 6,200,775,025/50,855.50
6. Step 6: Final answer
   x = 121,929.29