Finding the Third Proportional to 91,008 and 188,288

Step by Step Solution

1. Step 1: Write the proportion equation
   91,008 : 188,288 = 188,288 : x
2. Step 2: Convert to fraction form
   91,008/188,288 = 188,288/x
3. Step 3: Cross multiply
   91,008x = 188,288 × 188,288
4. Step 4: Simplify right side
   91,008x = 35,452,370,944
5. Step 5: Solve for x
   x = 35,452,370,944/91,008
6. Step 6: Final answer
   x = 389,552.25