Finding the Third Proportional to 638,178 and 1,382,020

Step by Step Solution

1. Step 1: Write the proportion equation
   638,178 : 1,382,020 = 1,382,020 : x
2. Step 2: Convert to fraction form
   638,178/1,382,020 = 1,382,020/x
3. Step 3: Cross multiply
   638,178x = 1,382,020 × 1,382,020
4. Step 4: Simplify right side
   638,178x = 1,909,979,280,400
5. Step 5: Solve for x
   x = 1,909,979,280,400/638,178
6. Step 6: Final answer
   x = 2,992,862.93