Finding the Third Proportional to 648,984 and 1,393,920

Step by Step Solution

1. Step 1: Write the proportion equation
   648,984 : 1,393,920 = 1,393,920 : x
2. Step 2: Convert to fraction form
   648,984/1,393,920 = 1,393,920/x
3. Step 3: Cross multiply
   648,984x = 1,393,920 × 1,393,920
4. Step 4: Simplify right side
   648,984x = 1,943,012,966,400
5. Step 5: Solve for x
   x = 1,943,012,966,400/648,984
6. Step 6: Final answer
   x = 2,993,930.46