Finding the Third Proportional to 640,362 and 1,380,036

Step by Step Solution

1. Step 1: Write the proportion equation
   640,362 : 1,380,036 = 1,380,036 : x
2. Step 2: Convert to fraction form
   640,362/1,380,036 = 1,380,036/x
3. Step 3: Cross multiply
   640,362x = 1,380,036 × 1,380,036
4. Step 4: Simplify right side
   640,362x = 1,904,499,361,296
5. Step 5: Solve for x
   x = 1,904,499,361,296/640,362
6. Step 6: Final answer
   x = 2,974,098.03