Finding the Third Proportional to 308,142 and 675,108

Step by Step Solution

1. Step 1: Write the proportion equation
   308,142 : 675,108 = 675,108 : x
2. Step 2: Convert to fraction form
   308,142/675,108 = 675,108/x
3. Step 3: Cross multiply
   308,142x = 675,108 × 675,108
4. Step 4: Simplify right side
   308,142x = 455,770,811,664
5. Step 5: Solve for x
   x = 455,770,811,664/308,142
6. Step 6: Final answer
   x = 1,479,093.44