Finding the Third Proportional to 1,202,138 and 2,538,412

Step by Step Solution

1. Step 1: Write the proportion equation
   1,202,138 : 2,538,412 = 2,538,412 : x
2. Step 2: Convert to fraction form
   1,202,138/2,538,412 = 2,538,412/x
3. Step 3: Cross multiply
   1,202,138x = 2,538,412 × 2,538,412
4. Step 4: Simplify right side
   1,202,138x = 6,443,535,481,744
5. Step 5: Solve for x
   x = 6,443,535,481,744/1,202,138
6. Step 6: Final answer
   x = 5,360,063.06