Finding the Third Proportional to 199,436 and 299,290

Step by Step Solution

1. Step 1: Write the proportion equation
   199,436 : 299,290 = 299,290 : x
2. Step 2: Convert to fraction form
   199,436/299,290 = 299,290/x
3. Step 3: Cross multiply
   199,436x = 299,290 × 299,290
4. Step 4: Simplify right side
   199,436x = 89,574,504,100
5. Step 5: Solve for x
   x = 89,574,504,100/199,436
6. Step 6: Final answer
   x = 449,139.09