Finding the Third Proportional to 279,686 and 443,091

Step by Step Solution

1. Step 1: Write the proportion equation
   279,686 : 443,091 = 443,091 : x
2. Step 2: Convert to fraction form
   279,686/443,091 = 443,091/x
3. Step 3: Cross multiply
   279,686x = 443,091 × 443,091
4. Step 4: Simplify right side
   279,686x = 196,329,634,281
5. Step 5: Solve for x
   x = 196,329,634,281/279,686
6. Step 6: Final answer
   x = 701,964.47