Finding the Third Proportional to 55,236.75 and 86,409.38

Step by Step Solution

1. Step 1: Write the proportion equation
   55,236.75 : 86,409.38 = 86,409.38 : x
2. Step 2: Convert to fraction form
   55,236.75/86,409.38 = 86,409.38/x
3. Step 3: Cross multiply
   55,236.75x = 86,409.38 × 86,409.38
4. Step 4: Simplify right side
   55,236.75x = 7,466,580,087.89
5. Step 5: Solve for x
   x = 7,466,580,087.89/55,236.75
6. Step 6: Final answer
   x = 135,174.14