Finding the Third Proportional to 277,696 and 619,904

Step by Step Solution

1. Step 1: Write the proportion equation
   277,696 : 619,904 = 619,904 : x
2. Step 2: Convert to fraction form
   277,696/619,904 = 619,904/x
3. Step 3: Cross multiply
   277,696x = 619,904 × 619,904
4. Step 4: Simplify right side
   277,696x = 384,280,969,216
5. Step 5: Solve for x
   x = 384,280,969,216/277,696
6. Step 6: Final answer
   x = 1,383,818.89