Finding the Third Proportional to 312,717 and 737,476.50

Step by Step Solution

1. Step 1: Write the proportion equation
   312,717 : 737,476.50 = 737,476.50 : x
2. Step 2: Convert to fraction form
   312,717/737,476.50 = 737,476.50/x
3. Step 3: Cross multiply
   312,717x = 737,476.50 × 737,476.50
4. Step 4: Simplify right side
   312,717x = 543,871,588,052.25
5. Step 5: Solve for x
   x = 543,871,588,052.25/312,717
6. Step 6: Final answer
   x = 1,739,181.39