Finding the Third Proportional to 872,100 and 1,870,290

Step by Step Solution

1. Step 1: Write the proportion equation
   872,100 : 1,870,290 = 1,870,290 : x
2. Step 2: Convert to fraction form
   872,100/1,870,290 = 1,870,290/x
3. Step 3: Cross multiply
   872,100x = 1,870,290 × 1,870,290
4. Step 4: Simplify right side
   872,100x = 3,497,984,684,100
5. Step 5: Solve for x
   x = 3,497,984,684,100/872,100
6. Step 6: Final answer
   x = 4,010,990.35