Finding the Third Proportional to 65,648 and 143,878

Step by Step Solution

1. Step 1: Write the proportion equation
   65,648 : 143,878 = 143,878 : x
2. Step 2: Convert to fraction form
   65,648/143,878 = 143,878/x
3. Step 3: Cross multiply
   65,648x = 143,878 × 143,878
4. Step 4: Simplify right side
   65,648x = 20,700,878,884
5. Step 5: Solve for x
   x = 20,700,878,884/65,648
6. Step 6: Final answer
   x = 315,331.45