Finding the Third Proportional to 6,315,138 and 13,290,462

Step by Step Solution

1. Step 1: Write the proportion equation
   6,315,138 : 13,290,462 = 13,290,462 : x
2. Step 2: Convert to fraction form
   6,315,138/13,290,462 = 13,290,462/x
3. Step 3: Cross multiply
   6,315,138x = 13,290,462 × 13,290,462
4. Step 4: Simplify right side
   6,315,138x = 176,636,380,173,444
5. Step 5: Solve for x
   x = 176,636,380,173,444/6,315,138
6. Step 6: Final answer
   x = 27,970,312.00