Finding the Third Proportional to 140,313 and 300,549

Step by Step Solution

1. Step 1: Write the proportion equation
   140,313 : 300,549 = 300,549 : x
2. Step 2: Convert to fraction form
   140,313/300,549 = 300,549/x
3. Step 3: Cross multiply
   140,313x = 300,549 × 300,549
4. Step 4: Simplify right side
   140,313x = 90,329,701,401
5. Step 5: Solve for x
   x = 90,329,701,401/140,313
6. Step 6: Final answer
   x = 643,772.86