Finding the Third Proportional to 1,636,561,469 and 3,589,969,666

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,561,469 : 3,589,969,666 = 3,589,969,666 : x
2. Step 2: Convert to fraction form
   1,636,561,469/3,589,969,666 = 3,589,969,666/x
3. Step 3: Cross multiply
   1,636,561,469x = 3,589,969,666 × 3,589,969,666
4. Step 4: Simplify right side
   1,636,561,469x = 12,887,882,202,800,152,576
5. Step 5: Solve for x
   x = 12,887,882,202,800,152,576/1,636,561,469
6. Step 6: Final answer
   x = 7,874,975,946.17