Finding the Third Proportional to 621,738 and 1,384,362

Step by Step Solution

1. Step 1: Write the proportion equation
   621,738 : 1,384,362 = 1,384,362 : x
2. Step 2: Convert to fraction form
   621,738/1,384,362 = 1,384,362/x
3. Step 3: Cross multiply
   621,738x = 1,384,362 × 1,384,362
4. Step 4: Simplify right side
   621,738x = 1,916,458,147,044
5. Step 5: Solve for x
   x = 1,916,458,147,044/621,738
6. Step 6: Final answer
   x = 3,082,420.81