Finding the Third Proportional to 140,884 and 288,248

Step by Step Solution

1. Step 1: Write the proportion equation
   140,884 : 288,248 = 288,248 : x
2. Step 2: Convert to fraction form
   140,884/288,248 = 288,248/x
3. Step 3: Cross multiply
   140,884x = 288,248 × 288,248
4. Step 4: Simplify right side
   140,884x = 83,086,909,504
5. Step 5: Solve for x
   x = 83,086,909,504/140,884
6. Step 6: Final answer
   x = 589,754.05