Finding the Third Proportional to 1,408,985,039.53 and 2,782,405,054.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408,985,039.53 : 2,782,405,054.69 = 2,782,405,054.69 : x
2. Step 2: Convert to fraction form
   1,408,985,039.53/2,782,405,054.69 = 2,782,405,054.69/x
3. Step 3: Cross multiply
   1,408,985,039.53x = 2,782,405,054.69 × 2,782,405,054.69
4. Step 4: Simplify right side
   1,408,985,039.53x = 7,741,777,888,350,550,016
5. Step 5: Solve for x
   x = 7,741,777,888,350,550,016/1,408,985,039.53
6. Step 6: Final answer
   x = 5,494,577,778.43