Finding the Third Proportional to 5,590,514 and 11,978,308

Step by Step Solution

1. Step 1: Write the proportion equation
   5,590,514 : 11,978,308 = 11,978,308 : x
2. Step 2: Convert to fraction form
   5,590,514/11,978,308 = 11,978,308/x
3. Step 3: Cross multiply
   5,590,514x = 11,978,308 × 11,978,308
4. Step 4: Simplify right side
   5,590,514x = 143,479,862,542,864
5. Step 5: Solve for x
   x = 143,479,862,542,864/5,590,514
6. Step 6: Final answer
   x = 25,664,878.50