Finding the Third Proportional to 87,447 and 188,274

Step by Step Solution

1. Step 1: Write the proportion equation
   87,447 : 188,274 = 188,274 : x
2. Step 2: Convert to fraction form
   87,447/188,274 = 188,274/x
3. Step 3: Cross multiply
   87,447x = 188,274 × 188,274
4. Step 4: Simplify right side
   87,447x = 35,447,099,076
5. Step 5: Solve for x
   x = 35,447,099,076/87,447
6. Step 6: Final answer
   x = 405,355.23