Finding the Third Proportional to 1,289,972 and 3,012,305

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289,972 : 3,012,305 = 3,012,305 : x
2. Step 2: Convert to fraction form
   1,289,972/3,012,305 = 3,012,305/x
3. Step 3: Cross multiply
   1,289,972x = 3,012,305 × 3,012,305
4. Step 4: Simplify right side
   1,289,972x = 9,073,981,413,025
5. Step 5: Solve for x
   x = 9,073,981,413,025/1,289,972
6. Step 6: Final answer
   x = 7,034,246.80