Finding the Third Proportional to 642,879,696 and 1,395,354,300

Step by Step Solution

1. Step 1: Write the proportion equation
   642,879,696 : 1,395,354,300 = 1,395,354,300 : x
2. Step 2: Convert to fraction form
   642,879,696/1,395,354,300 = 1,395,354,300/x
3. Step 3: Cross multiply
   642,879,696x = 1,395,354,300 × 1,395,354,300
4. Step 4: Simplify right side
   642,879,696x = 1,947,013,622,528,489,984
5. Step 5: Solve for x
   x = 1,947,013,622,528,489,984/642,879,696
6. Step 6: Final answer
   x = 3,028,581,606.55