Finding the Third Proportional to 36,399.38 and 77,137.31

Step by Step Solution

1. Step 1: Write the proportion equation
   36,399.38 : 77,137.31 = 77,137.31 : x
2. Step 2: Convert to fraction form
   36,399.38/77,137.31 = 77,137.31/x
3. Step 3: Cross multiply
   36,399.38x = 77,137.31 × 77,137.31
4. Step 4: Simplify right side
   36,399.38x = 5,950,164,979.72
5. Step 5: Solve for x
   x = 5,950,164,979.72/36,399.38
6. Step 6: Final answer
   x = 163,468.88