Finding the Third Proportional to 368,694,583 and 789,978,412

Step by Step Solution

1. Step 1: Write the proportion equation
   368,694,583 : 789,978,412 = 789,978,412 : x
2. Step 2: Convert to fraction form
   368,694,583/789,978,412 = 789,978,412/x
3. Step 3: Cross multiply
   368,694,583x = 789,978,412 × 789,978,412
4. Step 4: Simplify right side
   368,694,583x = 624,065,891,426,041,728
5. Step 5: Solve for x
   x = 624,065,891,426,041,728/368,694,583
6. Step 6: Final answer
   x = 1,692,636,453.59