Finding the Third Proportional to 65,590 and 143,492

Step by Step Solution

1. Step 1: Write the proportion equation
   65,590 : 143,492 = 143,492 : x
2. Step 2: Convert to fraction form
   65,590/143,492 = 143,492/x
3. Step 3: Cross multiply
   65,590x = 143,492 × 143,492
4. Step 4: Simplify right side
   65,590x = 20,589,954,064
5. Step 5: Solve for x
   x = 20,589,954,064/65,590
6. Step 6: Final answer
   x = 313,919.10