Finding the Third Proportional to 55,404 and 85,212

Step by Step Solution

1. Step 1: Write the proportion equation
   55,404 : 85,212 = 85,212 : x
2. Step 2: Convert to fraction form
   55,404/85,212 = 85,212/x
3. Step 3: Cross multiply
   55,404x = 85,212 × 85,212
4. Step 4: Simplify right side
   55,404x = 7,261,084,944
5. Step 5: Solve for x
   x = 7,261,084,944/55,404
6. Step 6: Final answer
   x = 131,057.05