Finding the Third Proportional to 143,345.50 and 200,492.25

Step by Step Solution

1. Step 1: Write the proportion equation
   143,345.50 : 200,492.25 = 200,492.25 : x
2. Step 2: Convert to fraction form
   143,345.50/200,492.25 = 200,492.25/x
3. Step 3: Cross multiply
   143,345.50x = 200,492.25 × 200,492.25
4. Step 4: Simplify right side
   143,345.50x = 40,197,142,310.06
5. Step 5: Solve for x
   x = 40,197,142,310.06/143,345.50
6. Step 6: Final answer
   x = 280,421.38