Finding the Third Proportional to 201,907 and 311,284.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,907 : 311,284.50 = 311,284.50 : x
2. Step 2: Convert to fraction form
   201,907/311,284.50 = 311,284.50/x
3. Step 3: Cross multiply
   201,907x = 311,284.50 × 311,284.50
4. Step 4: Simplify right side
   201,907x = 96,898,039,940.25
5. Step 5: Solve for x
   x = 96,898,039,940.25/201,907
6. Step 6: Final answer
   x = 479,914.22