Finding the Third Proportional to 314,563.50 and 439,830

Step by Step Solution

1. Step 1: Write the proportion equation
   314,563.50 : 439,830 = 439,830 : x
2. Step 2: Convert to fraction form
   314,563.50/439,830 = 439,830/x
3. Step 3: Cross multiply
   314,563.50x = 439,830 × 439,830
4. Step 4: Simplify right side
   314,563.50x = 193,450,428,900
5. Step 5: Solve for x
   x = 193,450,428,900/314,563.50
6. Step 6: Final answer
   x = 614,980.53