Finding the Third Proportional to 3,686,692 and 5,642,303

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686,692 : 5,642,303 = 5,642,303 : x
2. Step 2: Convert to fraction form
   3,686,692/5,642,303 = 5,642,303/x
3. Step 3: Cross multiply
   3,686,692x = 5,642,303 × 5,642,303
4. Step 4: Simplify right side
   3,686,692x = 31,835,583,143,809
5. Step 5: Solve for x
   x = 31,835,583,143,809/3,686,692
6. Step 6: Final answer
   x = 8,635,270.63