Finding the Third Proportional to 1,228,648 and 1,860,145

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228,648 : 1,860,145 = 1,860,145 : x
2. Step 2: Convert to fraction form
   1,228,648/1,860,145 = 1,860,145/x
3. Step 3: Cross multiply
   1,228,648x = 1,860,145 × 1,860,145
4. Step 4: Simplify right side
   1,228,648x = 3,460,139,421,025
5. Step 5: Solve for x
   x = 3,460,139,421,025/1,228,648
6. Step 6: Final answer
   x = 2,816,217.03