Finding the Third Proportional to 87,280 and 133,456

Step by Step Solution

1. Step 1: Write the proportion equation
   87,280 : 133,456 = 133,456 : x
2. Step 2: Convert to fraction form
   87,280/133,456 = 133,456/x
3. Step 3: Cross multiply
   87,280x = 133,456 × 133,456
4. Step 4: Simplify right side
   87,280x = 17,810,503,936
5. Step 5: Solve for x
   x = 17,810,503,936/87,280
6. Step 6: Final answer
   x = 204,061.69