Finding the Third Proportional to 189,009 and 304,537.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,009 : 304,537.50 = 304,537.50 : x
2. Step 2: Convert to fraction form
   189,009/304,537.50 = 304,537.50/x
3. Step 3: Cross multiply
   189,009x = 304,537.50 × 304,537.50
4. Step 4: Simplify right side
   189,009x = 92,743,088,906.25
5. Step 5: Solve for x
   x = 92,743,088,906.25/189,009
6. Step 6: Final answer
   x = 490,680.81