Finding the Third Proportional to 141,543 and 309,339

Step by Step Solution

1. Step 1: Write the proportion equation
   141,543 : 309,339 = 309,339 : x
2. Step 2: Convert to fraction form
   141,543/309,339 = 309,339/x
3. Step 3: Cross multiply
   141,543x = 309,339 × 309,339
4. Step 4: Simplify right side
   141,543x = 95,690,616,921
5. Step 5: Solve for x
   x = 95,690,616,921/141,543
6. Step 6: Final answer
   x = 676,053.33