Finding the Third Proportional to 141,566 and 309,385

Step by Step Solution

1. Step 1: Write the proportion equation
   141,566 : 309,385 = 309,385 : x
2. Step 2: Convert to fraction form
   141,566/309,385 = 309,385/x
3. Step 3: Cross multiply
   141,566x = 309,385 × 309,385
4. Step 4: Simplify right side
   141,566x = 95,719,078,225
5. Step 5: Solve for x
   x = 95,719,078,225/141,566
6. Step 6: Final answer
   x = 676,144.54