Finding the Third Proportional to 1,081,172 and 1,640,724

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081,172 : 1,640,724 = 1,640,724 : x
2. Step 2: Convert to fraction form
   1,081,172/1,640,724 = 1,640,724/x
3. Step 3: Cross multiply
   1,081,172x = 1,640,724 × 1,640,724
4. Step 4: Simplify right side
   1,081,172x = 2,691,975,244,176
5. Step 5: Solve for x
   x = 2,691,975,244,176/1,081,172
6. Step 6: Final answer
   x = 2,489,867.70