Finding the Third Proportional to 1,355,172 and 1,981,768

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355,172 : 1,981,768 = 1,981,768 : x
2. Step 2: Convert to fraction form
   1,355,172/1,981,768 = 1,981,768/x
3. Step 3: Cross multiply
   1,355,172x = 1,981,768 × 1,981,768
4. Step 4: Simplify right side
   1,355,172x = 3,927,404,405,824
5. Step 5: Solve for x
   x = 3,927,404,405,824/1,355,172
6. Step 6: Final answer
   x = 2,898,085.56