Finding the Third Proportional to 2,978,772 and 6,429,937

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978,772 : 6,429,937 = 6,429,937 : x
2. Step 2: Convert to fraction form
   2,978,772/6,429,937 = 6,429,937/x
3. Step 3: Cross multiply
   2,978,772x = 6,429,937 × 6,429,937
4. Step 4: Simplify right side
   2,978,772x = 41,344,089,823,969
5. Step 5: Solve for x
   x = 41,344,089,823,969/2,978,772
6. Step 6: Final answer
   x = 13,879,575.15