Finding the Third Proportional to 99,904 and 209,041

Step by Step Solution

1. Step 1: Write the proportion equation
   99,904 : 209,041 = 209,041 : x
2. Step 2: Convert to fraction form
   99,904/209,041 = 209,041/x
3. Step 3: Cross multiply
   99,904x = 209,041 × 209,041
4. Step 4: Simplify right side
   99,904x = 43,698,139,681
5. Step 5: Solve for x
   x = 43,698,139,681/99,904
6. Step 6: Final answer
   x = 437,401.30