Finding the Third Proportional to 283,231.69 and 432,243

Step by Step Solution

1. Step 1: Write the proportion equation
   283,231.69 : 432,243 = 432,243 : x
2. Step 2: Convert to fraction form
   283,231.69/432,243 = 432,243/x
3. Step 3: Cross multiply
   283,231.69x = 432,243 × 432,243
4. Step 4: Simplify right side
   283,231.69x = 186,834,011,049
5. Step 5: Solve for x
   x = 186,834,011,049/283,231.69
6. Step 6: Final answer
   x = 659,650.81