Finding the Third Proportional to 65,661 and 144,087

Step by Step Solution

1. Step 1: Write the proportion equation
   65,661 : 144,087 = 144,087 : x
2. Step 2: Convert to fraction form
   65,661/144,087 = 144,087/x
3. Step 3: Cross multiply
   65,661x = 144,087 × 144,087
4. Step 4: Simplify right side
   65,661x = 20,761,063,569
5. Step 5: Solve for x
   x = 20,761,063,569/65,661
6. Step 6: Final answer
   x = 316,185.61