Finding the Third Proportional to 455,591.25 and 679,698

Step by Step Solution

1. Step 1: Write the proportion equation
   455,591.25 : 679,698 = 679,698 : x
2. Step 2: Convert to fraction form
   455,591.25/679,698 = 679,698/x
3. Step 3: Cross multiply
   455,591.25x = 679,698 × 679,698
4. Step 4: Simplify right side
   455,591.25x = 461,989,371,204
5. Step 5: Solve for x
   x = 461,989,371,204/455,591.25
6. Step 6: Final answer
   x = 1,014,043.56