Finding the Third Proportional to 1,621,669,356 and 3,540,591,390

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,669,356 : 3,540,591,390 = 3,540,591,390 : x
2. Step 2: Convert to fraction form
   1,621,669,356/3,540,591,390 = 3,540,591,390/x
3. Step 3: Cross multiply
   1,621,669,356x = 3,540,591,390 × 3,540,591,390
4. Step 4: Simplify right side
   1,621,669,356x = 12,535,787,390,942,132,224
5. Step 5: Solve for x
   x = 12,535,787,390,942,132,224/1,621,669,356
6. Step 6: Final answer
   x = 7,730,174,677.45