Finding the Third Proportional to 3,638,390 and 7,383,692

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638,390 : 7,383,692 = 7,383,692 : x
2. Step 2: Convert to fraction form
   3,638,390/7,383,692 = 7,383,692/x
3. Step 3: Cross multiply
   3,638,390x = 7,383,692 × 7,383,692
4. Step 4: Simplify right side
   3,638,390x = 54,518,907,550,864
5. Step 5: Solve for x
   x = 54,518,907,550,864/3,638,390
6. Step 6: Final answer
   x = 14,984,349.55