Finding the Third Proportional to 136,341 and 209,290

Step by Step Solution

1. Step 1: Write the proportion equation
   136,341 : 209,290 = 209,290 : x
2. Step 2: Convert to fraction form
   136,341/209,290 = 209,290/x
3. Step 3: Cross multiply
   136,341x = 209,290 × 209,290
4. Step 4: Simplify right side
   136,341x = 43,802,304,100
5. Step 5: Solve for x
   x = 43,802,304,100/136,341
6. Step 6: Final answer
   x = 321,270.23