Finding the Third Proportional to 78,636,277 and 171,078,517

Step by Step Solution

1. Step 1: Write the proportion equation
   78,636,277 : 171,078,517 = 171,078,517 : x
2. Step 2: Convert to fraction form
   78,636,277/171,078,517 = 171,078,517/x
3. Step 3: Cross multiply
   78,636,277x = 171,078,517 × 171,078,517
4. Step 4: Simplify right side
   78,636,277x = 29,267,858,978,919,288
5. Step 5: Solve for x
   x = 29,267,858,978,919,288/78,636,277
6. Step 6: Final answer
   x = 372,192,836.38