Finding the Third Proportional to 18,426 and 42,993

Step by Step Solution

1. Step 1: Write the proportion equation
   18,426 : 42,993 = 42,993 : x
2. Step 2: Convert to fraction form
   18,426/42,993 = 42,993/x
3. Step 3: Cross multiply
   18,426x = 42,993 × 42,993
4. Step 4: Simplify right side
   18,426x = 1,848,398,049
5. Step 5: Solve for x
   x = 1,848,398,049/18,426
6. Step 6: Final answer
   x = 100,314.67