Finding the Third Proportional to 1,077,200 and 1,638,186

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,200 : 1,638,186 = 1,638,186 : x
2. Step 2: Convert to fraction form
   1,077,200/1,638,186 = 1,638,186/x
3. Step 3: Cross multiply
   1,077,200x = 1,638,186 × 1,638,186
4. Step 4: Simplify right side
   1,077,200x = 2,683,653,370,596
5. Step 5: Solve for x
   x = 2,683,653,370,596/1,077,200
6. Step 6: Final answer
   x = 2,491,323.22