Finding the Third Proportional to 339,411.94 and 743,630.63

Step by Step Solution

1. Step 1: Write the proportion equation
   339,411.94 : 743,630.63 = 743,630.63 : x
2. Step 2: Convert to fraction form
   339,411.94/743,630.63 = 743,630.63/x
3. Step 3: Cross multiply
   339,411.94x = 743,630.63 × 743,630.63
4. Step 4: Simplify right side
   339,411.94x = 552,986,506,437.89
5. Step 5: Solve for x
   x = 552,986,506,437.89/339,411.94
6. Step 6: Final answer
   x = 1,629,248.84