Finding the Third Proportional to 1,388,727 and 2,164,293

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,727 : 2,164,293 = 2,164,293 : x
2. Step 2: Convert to fraction form
   1,388,727/2,164,293 = 2,164,293/x
3. Step 3: Cross multiply
   1,388,727x = 2,164,293 × 2,164,293
4. Step 4: Simplify right side
   1,388,727x = 4,684,164,189,849
5. Step 5: Solve for x
   x = 4,684,164,189,849/1,388,727
6. Step 6: Final answer
   x = 3,372,991.37