Finding the Third Proportional to 679,328 and 1,388,152

Step by Step Solution

1. Step 1: Write the proportion equation
   679,328 : 1,388,152 = 1,388,152 : x
2. Step 2: Convert to fraction form
   679,328/1,388,152 = 1,388,152/x
3. Step 3: Cross multiply
   679,328x = 1,388,152 × 1,388,152
4. Step 4: Simplify right side
   679,328x = 1,926,965,975,104
5. Step 5: Solve for x
   x = 1,926,965,975,104/679,328
6. Step 6: Final answer
   x = 2,836,576.70