Finding the Third Proportional to 85,809.38 and 123,793.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,809.38 : 123,793.31 = 123,793.31 : x
2. Step 2: Convert to fraction form
   85,809.38/123,793.31 = 123,793.31/x
3. Step 3: Cross multiply
   85,809.38x = 123,793.31 × 123,793.31
4. Step 4: Simplify right side
   85,809.38x = 15,324,784,219.72
5. Step 5: Solve for x
   x = 15,324,784,219.72/85,809.38
6. Step 6: Final answer
   x = 178,591.02