Finding the Third Proportional to 860,103 and 1,290,483

Step by Step Solution

1. Step 1: Write the proportion equation
   860,103 : 1,290,483 = 1,290,483 : x
2. Step 2: Convert to fraction form
   860,103/1,290,483 = 1,290,483/x
3. Step 3: Cross multiply
   860,103x = 1,290,483 × 1,290,483
4. Step 4: Simplify right side
   860,103x = 1,665,346,373,289
5. Step 5: Solve for x
   x = 1,665,346,373,289/860,103
6. Step 6: Final answer
   x = 1,936,217.38