Finding the Third Proportional to 395,895,316 and 869,831,540

Step by Step Solution

1. Step 1: Write the proportion equation
   395,895,316 : 869,831,540 = 869,831,540 : x
2. Step 2: Convert to fraction form
   395,895,316/869,831,540 = 869,831,540/x
3. Step 3: Cross multiply
   395,895,316x = 869,831,540 × 869,831,540
4. Step 4: Simplify right side
   395,895,316x = 756,606,907,978,771,584
5. Step 5: Solve for x
   x = 756,606,907,978,771,584/395,895,316
6. Step 6: Final answer
   x = 1,911,128,718.63