Finding the Third Proportional to 278,789 and 443,104

Step by Step Solution

1. Step 1: Write the proportion equation
   278,789 : 443,104 = 443,104 : x
2. Step 2: Convert to fraction form
   278,789/443,104 = 443,104/x
3. Step 3: Cross multiply
   278,789x = 443,104 × 443,104
4. Step 4: Simplify right side
   278,789x = 196,341,154,816
5. Step 5: Solve for x
   x = 196,341,154,816/278,789
6. Step 6: Final answer
   x = 704,264.35