Finding the Third Proportional to 1,636,561,449 and 3,589,969,626

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,561,449 : 3,589,969,626 = 3,589,969,626 : x
2. Step 2: Convert to fraction form
   1,636,561,449/3,589,969,626 = 3,589,969,626/x
3. Step 3: Cross multiply
   1,636,561,449x = 3,589,969,626 × 3,589,969,626
4. Step 4: Simplify right side
   1,636,561,449x = 12,887,881,915,602,579,456
5. Step 5: Solve for x
   x = 12,887,881,915,602,579,456/1,636,561,449
6. Step 6: Final answer
   x = 7,874,975,866.92