Finding the Third Proportional to 1,012,680 and 2,199,223

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,680 : 2,199,223 = 2,199,223 : x
2. Step 2: Convert to fraction form
   1,012,680/2,199,223 = 2,199,223/x
3. Step 3: Cross multiply
   1,012,680x = 2,199,223 × 2,199,223
4. Step 4: Simplify right side
   1,012,680x = 4,836,581,803,729
5. Step 5: Solve for x
   x = 4,836,581,803,729/1,012,680
6. Step 6: Final answer
   x = 4,776,021.85