Finding the Third Proportional to 315,814.50 and 444,789

Step by Step Solution

1. Step 1: Write the proportion equation
   315,814.50 : 444,789 = 444,789 : x
2. Step 2: Convert to fraction form
   315,814.50/444,789 = 444,789/x
3. Step 3: Cross multiply
   315,814.50x = 444,789 × 444,789
4. Step 4: Simplify right side
   315,814.50x = 197,837,254,521
5. Step 5: Solve for x
   x = 197,837,254,521/315,814.50
6. Step 6: Final answer
   x = 626,434.99