Finding the Third Proportional to 2,558,888,891 and 3,931,449,968

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558,888,891 : 3,931,449,968 = 3,931,449,968 : x
2. Step 2: Convert to fraction form
   2,558,888,891/3,931,449,968 = 3,931,449,968/x
3. Step 3: Cross multiply
   2,558,888,891x = 3,931,449,968 × 3,931,449,968
4. Step 4: Simplify right side
   2,558,888,891x = 15,456,298,850,887,200,768
5. Step 5: Solve for x
   x = 15,456,298,850,887,200,768/2,558,888,891
6. Step 6: Final answer
   x = 6,040,238,364.88