Finding the Third Proportional to 1,012,689 and 2,199,240

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,689 : 2,199,240 = 2,199,240 : x
2. Step 2: Convert to fraction form
   1,012,689/2,199,240 = 2,199,240/x
3. Step 3: Cross multiply
   1,012,689x = 2,199,240 × 2,199,240
4. Step 4: Simplify right side
   1,012,689x = 4,836,656,577,600
5. Step 5: Solve for x
   x = 4,836,656,577,600/1,012,689
6. Step 6: Final answer
   x = 4,776,053.24