Finding the Third Proportional to 87,228 and 188,272

Step by Step Solution

1. Step 1: Write the proportion equation
   87,228 : 188,272 = 188,272 : x
2. Step 2: Convert to fraction form
   87,228/188,272 = 188,272/x
3. Step 3: Cross multiply
   87,228x = 188,272 × 188,272
4. Step 4: Simplify right side
   87,228x = 35,446,345,984
5. Step 5: Solve for x
   x = 35,446,345,984/87,228
6. Step 6: Final answer
   x = 406,364.31