Finding the Third Proportional to 3,659,878.69 and 5,478,738.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,659,878.69 : 5,478,738.75 = 5,478,738.75 : x
2. Step 2: Convert to fraction form
   3,659,878.69/5,478,738.75 = 5,478,738.75/x
3. Step 3: Cross multiply
   3,659,878.69x = 5,478,738.75 × 5,478,738.75
4. Step 4: Simplify right side
   3,659,878.69x = 30,016,578,290,751.56
5. Step 5: Solve for x
   x = 30,016,578,290,751.56/3,659,878.69
6. Step 6: Final answer
   x = 8,201,522.74