Finding the Third Proportional to 189,907 and 300,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,907 : 300,716.50 = 300,716.50 : x
2. Step 2: Convert to fraction form
   189,907/300,716.50 = 300,716.50/x
3. Step 3: Cross multiply
   189,907x = 300,716.50 × 300,716.50
4. Step 4: Simplify right side
   189,907x = 90,430,413,372.25
5. Step 5: Solve for x
   x = 90,430,413,372.25/189,907
6. Step 6: Final answer
   x = 476,182.62