Finding the Third Proportional to 131,185 and 289,934

Step by Step Solution

1. Step 1: Write the proportion equation
   131,185 : 289,934 = 289,934 : x
2. Step 2: Convert to fraction form
   131,185/289,934 = 289,934/x
3. Step 3: Cross multiply
   131,185x = 289,934 × 289,934
4. Step 4: Simplify right side
   131,185x = 84,061,724,356
5. Step 5: Solve for x
   x = 84,061,724,356/131,185
6. Step 6: Final answer
   x = 640,787.62