Finding the Third Proportional to 1,202,142 and 2,538,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,202,142 : 2,538,420 = 2,538,420 : x
2. Step 2: Convert to fraction form
   1,202,142/2,538,420 = 2,538,420/x
3. Step 3: Cross multiply
   1,202,142x = 2,538,420 × 2,538,420
4. Step 4: Simplify right side
   1,202,142x = 6,443,576,096,400
5. Step 5: Solve for x
   x = 6,443,576,096,400/1,202,142
6. Step 6: Final answer
   x = 5,360,079.01