Finding the Third Proportional to 140,056 and 299,800

Step by Step Solution

1. Step 1: Write the proportion equation
   140,056 : 299,800 = 299,800 : x
2. Step 2: Convert to fraction form
   140,056/299,800 = 299,800/x
3. Step 3: Cross multiply
   140,056x = 299,800 × 299,800
4. Step 4: Simplify right side
   140,056x = 89,880,040,000
5. Step 5: Solve for x
   x = 89,880,040,000/140,056
6. Step 6: Final answer
   x = 641,743.59