Finding the Third Proportional to 2,564,360 and 3,991,692

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564,360 : 3,991,692 = 3,991,692 : x
2. Step 2: Convert to fraction form
   2,564,360/3,991,692 = 3,991,692/x
3. Step 3: Cross multiply
   2,564,360x = 3,991,692 × 3,991,692
4. Step 4: Simplify right side
   2,564,360x = 15,933,605,022,864
5. Step 5: Solve for x
   x = 15,933,605,022,864/2,564,360
6. Step 6: Final answer
   x = 6,213,482.13