Finding the Third Proportional to 141,655 and 309,446

Step by Step Solution

1. Step 1: Write the proportion equation
   141,655 : 309,446 = 309,446 : x
2. Step 2: Convert to fraction form
   141,655/309,446 = 309,446/x
3. Step 3: Cross multiply
   141,655x = 309,446 × 309,446
4. Step 4: Simplify right side
   141,655x = 95,756,826,916
5. Step 5: Solve for x
   x = 95,756,826,916/141,655
6. Step 6: Final answer
   x = 675,986.21