Finding the Third Proportional to 449,415 and 683,322.75

Step by Step Solution

1. Step 1: Write the proportion equation
   449,415 : 683,322.75 = 683,322.75 : x
2. Step 2: Convert to fraction form
   449,415/683,322.75 = 683,322.75/x
3. Step 3: Cross multiply
   449,415x = 683,322.75 × 683,322.75
4. Step 4: Simplify right side
   449,415x = 466,929,980,667.56
5. Step 5: Solve for x
   x = 466,929,980,667.56/449,415
6. Step 6: Final answer
   x = 1,038,972.84