Finding the Third Proportional to 201,717 and 438,916.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,717 : 438,916.50 = 438,916.50 : x
2. Step 2: Convert to fraction form
   201,717/438,916.50 = 438,916.50/x
3. Step 3: Cross multiply
   201,717x = 438,916.50 × 438,916.50
4. Step 4: Simplify right side
   201,717x = 192,647,693,972.25
5. Step 5: Solve for x
   x = 192,647,693,972.25/201,717
6. Step 6: Final answer
   x = 955,039.46