Finding the Third Proportional to 63,687 and 133,570.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,687 : 133,570.50 = 133,570.50 : x
2. Step 2: Convert to fraction form
   63,687/133,570.50 = 133,570.50/x
3. Step 3: Cross multiply
   63,687x = 133,570.50 × 133,570.50
4. Step 4: Simplify right side
   63,687x = 17,841,078,470.25
5. Step 5: Solve for x
   x = 17,841,078,470.25/63,687
6. Step 6: Final answer
   x = 280,136.90