Finding the Third Proportional to 1,236,558,867 and 2,666,822,499

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,558,867 : 2,666,822,499 = 2,666,822,499 : x
2. Step 2: Convert to fraction form
   1,236,558,867/2,666,822,499 = 2,666,822,499/x
3. Step 3: Cross multiply
   1,236,558,867x = 2,666,822,499 × 2,666,822,499
4. Step 4: Simplify right side
   1,236,558,867x = 7,111,942,241,172,604,928
5. Step 5: Solve for x
   x = 7,111,942,241,172,604,928/1,236,558,867
6. Step 6: Final answer
   x = 5,751,398,037.71