Finding the Third Proportional to 679,326 and 1,388,148

Step by Step Solution

1. Step 1: Write the proportion equation
   679,326 : 1,388,148 = 1,388,148 : x
2. Step 2: Convert to fraction form
   679,326/1,388,148 = 1,388,148/x
3. Step 3: Cross multiply
   679,326x = 1,388,148 × 1,388,148
4. Step 4: Simplify right side
   679,326x = 1,926,954,869,904
5. Step 5: Solve for x
   x = 1,926,954,869,904/679,326
6. Step 6: Final answer
   x = 2,836,568.70