Finding the Third Proportional to 55,311 and 85,065

Step by Step Solution

1. Step 1: Write the proportion equation
   55,311 : 85,065 = 85,065 : x
2. Step 2: Convert to fraction form
   55,311/85,065 = 85,065/x
3. Step 3: Cross multiply
   55,311x = 85,065 × 85,065
4. Step 4: Simplify right side
   55,311x = 7,236,054,225
5. Step 5: Solve for x
   x = 7,236,054,225/55,311
6. Step 6: Final answer
   x = 130,824.87