Finding the Third Proportional to 308,842 and 666,892

Step by Step Solution

1. Step 1: Write the proportion equation
   308,842 : 666,892 = 666,892 : x
2. Step 2: Convert to fraction form
   308,842/666,892 = 666,892/x
3. Step 3: Cross multiply
   308,842x = 666,892 × 666,892
4. Step 4: Simplify right side
   308,842x = 444,744,939,664
5. Step 5: Solve for x
   x = 444,744,939,664/308,842
6. Step 6: Final answer
   x = 1,440,040.34