Finding the Third Proportional to 3,118,686 and 4,665,343

Step by Step Solution

1. Step 1: Write the proportion equation
   3,118,686 : 4,665,343 = 4,665,343 : x
2. Step 2: Convert to fraction form
   3,118,686/4,665,343 = 4,665,343/x
3. Step 3: Cross multiply
   3,118,686x = 4,665,343 × 4,665,343
4. Step 4: Simplify right side
   3,118,686x = 21,765,425,307,649
5. Step 5: Solve for x
   x = 21,765,425,307,649/3,118,686
6. Step 6: Final answer
   x = 6,979,037.10