Finding the Third Proportional to 5,418,618 and 7,430,407

Step by Step Solution

1. Step 1: Write the proportion equation
   5,418,618 : 7,430,407 = 7,430,407 : x
2. Step 2: Convert to fraction form
   5,418,618/7,430,407 = 7,430,407/x
3. Step 3: Cross multiply
   5,418,618x = 7,430,407 × 7,430,407
4. Step 4: Simplify right side
   5,418,618x = 55,210,948,185,649
5. Step 5: Solve for x
   x = 55,210,948,185,649/5,418,618
6. Step 6: Final answer
   x = 10,189,119.84