Finding the Third Proportional to 142,788 and 200,573

Step by Step Solution

1. Step 1: Write the proportion equation
   142,788 : 200,573 = 200,573 : x
2. Step 2: Convert to fraction form
   142,788/200,573 = 200,573/x
3. Step 3: Cross multiply
   142,788x = 200,573 × 200,573
4. Step 4: Simplify right side
   142,788x = 40,229,528,329
5. Step 5: Solve for x
   x = 40,229,528,329/142,788
6. Step 6: Final answer
   x = 281,743.06