Finding the Third Proportional to 189,999 and 300,843

Step by Step Solution

1. Step 1: Write the proportion equation
   189,999 : 300,843 = 300,843 : x
2. Step 2: Convert to fraction form
   189,999/300,843 = 300,843/x
3. Step 3: Cross multiply
   189,999x = 300,843 × 300,843
4. Step 4: Simplify right side
   189,999x = 90,506,510,649
5. Step 5: Solve for x
   x = 90,506,510,649/189,999
6. Step 6: Final answer
   x = 476,352.56