Finding the Third Proportional to 1,236,558,869 and 2,666,822,485

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,558,869 : 2,666,822,485 = 2,666,822,485 : x
2. Step 2: Convert to fraction form
   1,236,558,869/2,666,822,485 = 2,666,822,485/x
3. Step 3: Cross multiply
   1,236,558,869x = 2,666,822,485 × 2,666,822,485
4. Step 4: Simplify right side
   1,236,558,869x = 7,111,942,166,501,575,680
5. Step 5: Solve for x
   x = 7,111,942,166,501,575,680/1,236,558,869
6. Step 6: Final answer
   x = 5,751,397,968.02