Finding the Third Proportional to 454,697 and 679,237.50

Step by Step Solution

1. Step 1: Write the proportion equation
   454,697 : 679,237.50 = 679,237.50 : x
2. Step 2: Convert to fraction form
   454,697/679,237.50 = 679,237.50/x
3. Step 3: Cross multiply
   454,697x = 679,237.50 × 679,237.50
4. Step 4: Simplify right side
   454,697x = 461,363,581,406.25
5. Step 5: Solve for x
   x = 461,363,581,406.25/454,697
6. Step 6: Final answer
   x = 1,014,661.59