Finding the Third Proportional to 1,012,721 and 2,199,308

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,721 : 2,199,308 = 2,199,308 : x
2. Step 2: Convert to fraction form
   1,012,721/2,199,308 = 2,199,308/x
3. Step 3: Cross multiply
   1,012,721x = 2,199,308 × 2,199,308
4. Step 4: Simplify right side
   1,012,721x = 4,836,955,678,864
5. Step 5: Solve for x
   x = 4,836,955,678,864/1,012,721
6. Step 6: Final answer
   x = 4,776,197.67