Finding the Third Proportional to 281,978 and 436,904

Step by Step Solution

1. Step 1: Write the proportion equation
   281,978 : 436,904 = 436,904 : x
2. Step 2: Convert to fraction form
   281,978/436,904 = 436,904/x
3. Step 3: Cross multiply
   281,978x = 436,904 × 436,904
4. Step 4: Simplify right side
   281,978x = 190,885,105,216
5. Step 5: Solve for x
   x = 190,885,105,216/281,978
6. Step 6: Final answer
   x = 676,950.35