Finding the Third Proportional to 644,336 and 1,381,984

Step by Step Solution

1. Step 1: Write the proportion equation
   644,336 : 1,381,984 = 1,381,984 : x
2. Step 2: Convert to fraction form
   644,336/1,381,984 = 1,381,984/x
3. Step 3: Cross multiply
   644,336x = 1,381,984 × 1,381,984
4. Step 4: Simplify right side
   644,336x = 1,909,879,776,256
5. Step 5: Solve for x
   x = 1,909,879,776,256/644,336
6. Step 6: Final answer
   x = 2,964,105.34