Finding the Third Proportional to 201,072 and 300,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,072 : 300,619.50 = 300,619.50 : x
2. Step 2: Convert to fraction form
   201,072/300,619.50 = 300,619.50/x
3. Step 3: Cross multiply
   201,072x = 300,619.50 × 300,619.50
4. Step 4: Simplify right side
   201,072x = 90,372,083,780.25
5. Step 5: Solve for x
   x = 90,372,083,780.25/201,072
6. Step 6: Final answer
   x = 449,451.36