Finding the Third Proportional to 3,397,488 and 7,188,495

Step by Step Solution

1. Step 1: Write the proportion equation
   3,397,488 : 7,188,495 = 7,188,495 : x
2. Step 2: Convert to fraction form
   3,397,488/7,188,495 = 7,188,495/x
3. Step 3: Cross multiply
   3,397,488x = 7,188,495 × 7,188,495
4. Step 4: Simplify right side
   3,397,488x = 51,674,460,365,025
5. Step 5: Solve for x
   x = 51,674,460,365,025/3,397,488
6. Step 6: Final answer
   x = 15,209,607.91