Finding the Third Proportional to 355,616 and 839,460

Step by Step Solution

1. Step 1: Write the proportion equation
   355,616 : 839,460 = 839,460 : x
2. Step 2: Convert to fraction form
   355,616/839,460 = 839,460/x
3. Step 3: Cross multiply
   355,616x = 839,460 × 839,460
4. Step 4: Simplify right side
   355,616x = 704,693,091,600
5. Step 5: Solve for x
   x = 704,693,091,600/355,616
6. Step 6: Final answer
   x = 1,981,612.45