Finding the Third Proportional to 142,931 and 282,248

Step by Step Solution

1. Step 1: Write the proportion equation
   142,931 : 282,248 = 282,248 : x
2. Step 2: Convert to fraction form
   142,931/282,248 = 282,248/x
3. Step 3: Cross multiply
   142,931x = 282,248 × 282,248
4. Step 4: Simplify right side
   142,931x = 79,663,933,504
5. Step 5: Solve for x
   x = 79,663,933,504/142,931
6. Step 6: Final answer
   x = 557,359.38