Finding the Third Proportional to 644,573 and 1,404,692

Step by Step Solution

1. Step 1: Write the proportion equation
   644,573 : 1,404,692 = 1,404,692 : x
2. Step 2: Convert to fraction form
   644,573/1,404,692 = 1,404,692/x
3. Step 3: Cross multiply
   644,573x = 1,404,692 × 1,404,692
4. Step 4: Simplify right side
   644,573x = 1,973,159,614,864
5. Step 5: Solve for x
   x = 1,973,159,614,864/644,573
6. Step 6: Final answer
   x = 3,061,188.75