Finding the Third Proportional to 860,574 and 1,870,404

Step by Step Solution

1. Step 1: Write the proportion equation
   860,574 : 1,870,404 = 1,870,404 : x
2. Step 2: Convert to fraction form
   860,574/1,870,404 = 1,870,404/x
3. Step 3: Cross multiply
   860,574x = 1,870,404 × 1,870,404
4. Step 4: Simplify right side
   860,574x = 3,498,411,123,216
5. Step 5: Solve for x
   x = 3,498,411,123,216/860,574
6. Step 6: Final answer
   x = 4,065,206.62