Finding the Third Proportional to 873,290 and 1,388,667

Step by Step Solution

1. Step 1: Write the proportion equation
   873,290 : 1,388,667 = 1,388,667 : x
2. Step 2: Convert to fraction form
   873,290/1,388,667 = 1,388,667/x
3. Step 3: Cross multiply
   873,290x = 1,388,667 × 1,388,667
4. Step 4: Simplify right side
   873,290x = 1,928,396,036,889
5. Step 5: Solve for x
   x = 1,928,396,036,889/873,290
6. Step 6: Final answer
   x = 2,208,196.63