Finding the Third Proportional to 1,228,646 and 1,860,142

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228,646 : 1,860,142 = 1,860,142 : x
2. Step 2: Convert to fraction form
   1,228,646/1,860,142 = 1,860,142/x
3. Step 3: Cross multiply
   1,228,646x = 1,860,142 × 1,860,142
4. Step 4: Simplify right side
   1,228,646x = 3,460,128,260,164
5. Step 5: Solve for x
   x = 3,460,128,260,164/1,228,646
6. Step 6: Final answer
   x = 2,816,212.53