Finding the Third Proportional to 860,556 and 1,870,368

Step by Step Solution

1. Step 1: Write the proportion equation
   860,556 : 1,870,368 = 1,870,368 : x
2. Step 2: Convert to fraction form
   860,556/1,870,368 = 1,870,368/x
3. Step 3: Cross multiply
   860,556x = 1,870,368 × 1,870,368
4. Step 4: Simplify right side
   860,556x = 3,498,276,455,424
5. Step 5: Solve for x
   x = 3,498,276,455,424/860,556
6. Step 6: Final answer
   x = 4,065,135.16