Finding the Third Proportional to 200,731.50 and 436,455

Step by Step Solution

1. Step 1: Write the proportion equation
   200,731.50 : 436,455 = 436,455 : x
2. Step 2: Convert to fraction form
   200,731.50/436,455 = 436,455/x
3. Step 3: Cross multiply
   200,731.50x = 436,455 × 436,455
4. Step 4: Simplify right side
   200,731.50x = 190,492,967,025
5. Step 5: Solve for x
   x = 190,492,967,025/200,731.50
6. Step 6: Final answer
   x = 948,993.89