Finding the Third Proportional to 140,436 and 292,540

Step by Step Solution

1. Step 1: Write the proportion equation
   140,436 : 292,540 = 292,540 : x
2. Step 2: Convert to fraction form
   140,436/292,540 = 292,540/x
3. Step 3: Cross multiply
   140,436x = 292,540 × 292,540
4. Step 4: Simplify right side
   140,436x = 85,579,651,600
5. Step 5: Solve for x
   x = 85,579,651,600/140,436
6. Step 6: Final answer
   x = 609,385.43