Finding the Third Proportional to 1,715,740 and 3,388,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,715,740 : 3,388,420 = 3,388,420 : x
2. Step 2: Convert to fraction form
   1,715,740/3,388,420 = 3,388,420/x
3. Step 3: Cross multiply
   1,715,740x = 3,388,420 × 3,388,420
4. Step 4: Simplify right side
   1,715,740x = 11,481,390,096,400
5. Step 5: Solve for x
   x = 11,481,390,096,400/1,715,740
6. Step 6: Final answer
   x = 6,691,800.68