Finding the Third Proportional to 6,418,756 and 9,970,916

Step by Step Solution

1. Step 1: Write the proportion equation
   6,418,756 : 9,970,916 = 9,970,916 : x
2. Step 2: Convert to fraction form
   6,418,756/9,970,916 = 9,970,916/x
3. Step 3: Cross multiply
   6,418,756x = 9,970,916 × 9,970,916
4. Step 4: Simplify right side
   6,418,756x = 99,419,165,879,056
5. Step 5: Solve for x
   x = 99,419,165,879,056/6,418,756
6. Step 6: Final answer
   x = 15,488,852.65