Finding the Third Proportional to 673,289 and 1,439,890

Step by Step Solution

1. Step 1: Write the proportion equation
   673,289 : 1,439,890 = 1,439,890 : x
2. Step 2: Convert to fraction form
   673,289/1,439,890 = 1,439,890/x
3. Step 3: Cross multiply
   673,289x = 1,439,890 × 1,439,890
4. Step 4: Simplify right side
   673,289x = 2,073,283,212,100
5. Step 5: Solve for x
   x = 2,073,283,212,100/673,289
6. Step 6: Final answer
   x = 3,079,336.23