Finding the Third Proportional to 55,486 and 85,818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,486 : 85,818.50 = 85,818.50 : x
2. Step 2: Convert to fraction form
   55,486/85,818.50 = 85,818.50/x
3. Step 3: Cross multiply
   55,486x = 85,818.50 × 85,818.50
4. Step 4: Simplify right side
   55,486x = 7,364,814,942.25
5. Step 5: Solve for x
   x = 7,364,814,942.25/55,486
6. Step 6: Final answer
   x = 132,732.85