Finding the Third Proportional to 679,330 and 1,388,156

Step by Step Solution

1. Step 1: Write the proportion equation
   679,330 : 1,388,156 = 1,388,156 : x
2. Step 2: Convert to fraction form
   679,330/1,388,156 = 1,388,156/x
3. Step 3: Cross multiply
   679,330x = 1,388,156 × 1,388,156
4. Step 4: Simplify right side
   679,330x = 1,926,977,080,336
5. Step 5: Solve for x
   x = 1,926,977,080,336/679,330
6. Step 6: Final answer
   x = 2,836,584.69