Finding the Third Proportional to 55,458 and 85,328

Step by Step Solution

1. Step 1: Write the proportion equation
   55,458 : 85,328 = 85,328 : x
2. Step 2: Convert to fraction form
   55,458/85,328 = 85,328/x
3. Step 3: Cross multiply
   55,458x = 85,328 × 85,328
4. Step 4: Simplify right side
   55,458x = 7,280,867,584
5. Step 5: Solve for x
   x = 7,280,867,584/55,458
6. Step 6: Final answer
   x = 131,286.16