Finding the Third Proportional to 339,633 and 719,725.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,633 : 719,725.50 = 719,725.50 : x
2. Step 2: Convert to fraction form
   339,633/719,725.50 = 719,725.50/x
3. Step 3: Cross multiply
   339,633x = 719,725.50 × 719,725.50
4. Step 4: Simplify right side
   339,633x = 518,004,795,350.25
5. Step 5: Solve for x
   x = 518,004,795,350.25/339,633
6. Step 6: Final answer
   x = 1,525,189.82