Finding the Third Proportional to 624,626 and 1,388,980

Step by Step Solution

1. Step 1: Write the proportion equation
   624,626 : 1,388,980 = 1,388,980 : x
2. Step 2: Convert to fraction form
   624,626/1,388,980 = 1,388,980/x
3. Step 3: Cross multiply
   624,626x = 1,388,980 × 1,388,980
4. Step 4: Simplify right side
   624,626x = 1,929,265,440,400
5. Step 5: Solve for x
   x = 1,929,265,440,400/624,626
6. Step 6: Final answer
   x = 3,088,672.97