Finding the Third Proportional to 63,886 and 140,328

Step by Step Solution

1. Step 1: Write the proportion equation
   63,886 : 140,328 = 140,328 : x
2. Step 2: Convert to fraction form
   63,886/140,328 = 140,328/x
3. Step 3: Cross multiply
   63,886x = 140,328 × 140,328
4. Step 4: Simplify right side
   63,886x = 19,691,947,584
5. Step 5: Solve for x
   x = 19,691,947,584/63,886
6. Step 6: Final answer
   x = 308,235.73