Finding the Third Proportional to 143,909.16 and 215,880.82

Step by Step Solution

1. Step 1: Write the proportion equation
   143,909.16 : 215,880.82 = 215,880.82 : x
2. Step 2: Convert to fraction form
   143,909.16/215,880.82 = 215,880.82/x
3. Step 3: Cross multiply
   143,909.16x = 215,880.82 × 215,880.82
4. Step 4: Simplify right side
   143,909.16x = 46,604,528,578.80
5. Step 5: Solve for x
   x = 46,604,528,578.80/143,909.16
6. Step 6: Final answer
   x = 323,846.86