Finding the Third Proportional to 50,478.54 and 78,151.92

Step by Step Solution

1. Step 1: Write the proportion equation
   50,478.54 : 78,151.92 = 78,151.92 : x
2. Step 2: Convert to fraction form
   50,478.54/78,151.92 = 78,151.92/x
3. Step 3: Cross multiply
   50,478.54x = 78,151.92 × 78,151.92
4. Step 4: Simplify right side
   50,478.54x = 6,107,722,892.76
5. Step 5: Solve for x
   x = 6,107,722,892.76/50,478.54
6. Step 6: Final answer
   x = 120,996.43