Finding the Third Proportional to 289,738 and 448,250

Step by Step Solution

1. Step 1: Write the proportion equation
   289,738 : 448,250 = 448,250 : x
2. Step 2: Convert to fraction form
   289,738/448,250 = 448,250/x
3. Step 3: Cross multiply
   289,738x = 448,250 × 448,250
4. Step 4: Simplify right side
   289,738x = 200,928,062,500
5. Step 5: Solve for x
   x = 200,928,062,500/289,738
6. Step 6: Final answer
   x = 693,481.91