Finding the Third Proportional to 1,636,561,444 and 3,589,969,616

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,561,444 : 3,589,969,616 = 3,589,969,616 : x
2. Step 2: Convert to fraction form
   1,636,561,444/3,589,969,616 = 3,589,969,616/x
3. Step 3: Cross multiply
   1,636,561,444x = 3,589,969,616 × 3,589,969,616
4. Step 4: Simplify right side
   1,636,561,444x = 12,887,881,843,803,187,200
5. Step 5: Solve for x
   x = 12,887,881,843,803,187,200/1,636,561,444
6. Step 6: Final answer
   x = 7,874,975,847.10