Finding the Third Proportional to 99,978 and 150,993

Step by Step Solution

1. Step 1: Write the proportion equation
   99,978 : 150,993 = 150,993 : x
2. Step 2: Convert to fraction form
   99,978/150,993 = 150,993/x
3. Step 3: Cross multiply
   99,978x = 150,993 × 150,993
4. Step 4: Simplify right side
   99,978x = 22,798,886,049
5. Step 5: Solve for x
   x = 22,798,886,049/99,978
6. Step 6: Final answer
   x = 228,039.03