Finding the Third Proportional to 6,387,908,515 and 13,977,986,449

Step by Step Solution

1. Step 1: Write the proportion equation
   6,387,908,515 : 13,977,986,449 = 13,977,986,449 : x
2. Step 2: Convert to fraction form
   6,387,908,515/13,977,986,449 = 13,977,986,449/x
3. Step 3: Cross multiply
   6,387,908,515x = 13,977,986,449 × 13,977,986,449
4. Step 4: Simplify right side
   6,387,908,515x = 195,384,105,168,427,614,208
5. Step 5: Solve for x
   x = 195,384,105,168,427,614,208/6,387,908,515
6. Step 6: Final answer
   x = 30,586,553,440.71