Finding the Third Proportional to 209,061 and 280,908

Step by Step Solution

1. Step 1: Write the proportion equation
   209,061 : 280,908 = 280,908 : x
2. Step 2: Convert to fraction form
   209,061/280,908 = 280,908/x
3. Step 3: Cross multiply
   209,061x = 280,908 × 280,908
4. Step 4: Simplify right side
   209,061x = 78,909,304,464
5. Step 5: Solve for x
   x = 78,909,304,464/209,061
6. Step 6: Final answer
   x = 377,446.32