Finding the Third Proportional to 1,399,788 and 2,171,614

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399,788 : 2,171,614 = 2,171,614 : x
2. Step 2: Convert to fraction form
   1,399,788/2,171,614 = 2,171,614/x
3. Step 3: Cross multiply
   1,399,788x = 2,171,614 × 2,171,614
4. Step 4: Simplify right side
   1,399,788x = 4,715,907,364,996
5. Step 5: Solve for x
   x = 4,715,907,364,996/1,399,788
6. Step 6: Final answer
   x = 3,369,015.43