Finding the Third Proportional to 5,317,698 and 8,039,979

Step by Step Solution

1. Step 1: Write the proportion equation
   5,317,698 : 8,039,979 = 8,039,979 : x
2. Step 2: Convert to fraction form
   5,317,698/8,039,979 = 8,039,979/x
3. Step 3: Cross multiply
   5,317,698x = 8,039,979 × 8,039,979
4. Step 4: Simplify right side
   5,317,698x = 64,641,262,320,441
5. Step 5: Solve for x
   x = 64,641,262,320,441/5,317,698
6. Step 6: Final answer
   x = 12,155,873.15