Finding the Third Proportional to 190,604 and 279,540

Step by Step Solution

1. Step 1: Write the proportion equation
   190,604 : 279,540 = 279,540 : x
2. Step 2: Convert to fraction form
   190,604/279,540 = 279,540/x
3. Step 3: Cross multiply
   190,604x = 279,540 × 279,540
4. Step 4: Simplify right side
   190,604x = 78,142,611,600
5. Step 5: Solve for x
   x = 78,142,611,600/190,604
6. Step 6: Final answer
   x = 409,973.62