Finding the Third Proportional to 860,569 and 1,866,290

Step by Step Solution

1. Step 1: Write the proportion equation
   860,569 : 1,866,290 = 1,866,290 : x
2. Step 2: Convert to fraction form
   860,569/1,866,290 = 1,866,290/x
3. Step 3: Cross multiply
   860,569x = 1,866,290 × 1,866,290
4. Step 4: Simplify right side
   860,569x = 3,483,038,364,100
5. Step 5: Solve for x
   x = 3,483,038,364,100/860,569
6. Step 6: Final answer
   x = 4,047,366.76