Finding the Third Proportional to 864,472 and 1,388,970

Step by Step Solution

1. Step 1: Write the proportion equation
   864,472 : 1,388,970 = 1,388,970 : x
2. Step 2: Convert to fraction form
   864,472/1,388,970 = 1,388,970/x
3. Step 3: Cross multiply
   864,472x = 1,388,970 × 1,388,970
4. Step 4: Simplify right side
   864,472x = 1,929,237,660,900
5. Step 5: Solve for x
   x = 1,929,237,660,900/864,472
6. Step 6: Final answer
   x = 2,231,694.79