Finding the Third Proportional to 1,077,203 and 1,638,188

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,203 : 1,638,188 = 1,638,188 : x
2. Step 2: Convert to fraction form
   1,077,203/1,638,188 = 1,638,188/x
3. Step 3: Cross multiply
   1,077,203x = 1,638,188 × 1,638,188
4. Step 4: Simplify right side
   1,077,203x = 2,683,659,923,344
5. Step 5: Solve for x
   x = 2,683,659,923,344/1,077,203
6. Step 6: Final answer
   x = 2,491,322.36