Finding the Third Proportional to 139,569 and 302,781

Step by Step Solution

1. Step 1: Write the proportion equation
   139,569 : 302,781 = 302,781 : x
2. Step 2: Convert to fraction form
   139,569/302,781 = 302,781/x
3. Step 3: Cross multiply
   139,569x = 302,781 × 302,781
4. Step 4: Simplify right side
   139,569x = 91,676,333,961
5. Step 5: Solve for x
   x = 91,676,333,961/139,569
6. Step 6: Final answer
   x = 656,853.13