Finding the Third Proportional to 9,360 and 19,998

Step by Step Solution

1. Step 1: Write the proportion equation
   9,360 : 19,998 = 19,998 : x
2. Step 2: Convert to fraction form
   9,360/19,998 = 19,998/x
3. Step 3: Cross multiply
   9,360x = 19,998 × 19,998
4. Step 4: Simplify right side
   9,360x = 399,920,004
5. Step 5: Solve for x
   x = 399,920,004/9,360
6. Step 6: Final answer
   x = 42,726.50