Finding the Third Proportional to 85,379.25 and 137,181.38

Step by Step Solution

1. Step 1: Write the proportion equation
   85,379.25 : 137,181.38 = 137,181.38 : x
2. Step 2: Convert to fraction form
   85,379.25/137,181.38 = 137,181.38/x
3. Step 3: Cross multiply
   85,379.25x = 137,181.38 × 137,181.38
4. Step 4: Simplify right side
   85,379.25x = 18,818,729,646.89
5. Step 5: Solve for x
   x = 18,818,729,646.89/85,379.25
6. Step 6: Final answer
   x = 220,413.39