Finding the Third Proportional to 55,431.75 and 85,608.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,431.75 : 85,608.75 = 85,608.75 : x
2. Step 2: Convert to fraction form
   55,431.75/85,608.75 = 85,608.75/x
3. Step 3: Cross multiply
   55,431.75x = 85,608.75 × 85,608.75
4. Step 4: Simplify right side
   55,431.75x = 7,328,858,076.56
5. Step 5: Solve for x
   x = 7,328,858,076.56/55,431.75
6. Step 6: Final answer
   x = 132,214.08