Finding the Third Proportional to 141,545 and 309,343

Step by Step Solution

1. Step 1: Write the proportion equation
   141,545 : 309,343 = 309,343 : x
2. Step 2: Convert to fraction form
   141,545/309,343 = 309,343/x
3. Step 3: Cross multiply
   141,545x = 309,343 × 309,343
4. Step 4: Simplify right side
   141,545x = 95,693,091,649
5. Step 5: Solve for x
   x = 95,693,091,649/141,545
6. Step 6: Final answer
   x = 676,061.26