Finding the Third Proportional to 141,446 and 309,136

Step by Step Solution

1. Step 1: Write the proportion equation
   141,446 : 309,136 = 309,136 : x
2. Step 2: Convert to fraction form
   141,446/309,136 = 309,136/x
3. Step 3: Cross multiply
   141,446x = 309,136 × 309,136
4. Step 4: Simplify right side
   141,446x = 95,565,066,496
5. Step 5: Solve for x
   x = 95,565,066,496/141,446
6. Step 6: Final answer
   x = 675,629.33