Finding the Third Proportional to 856,870 and 1,861,244

Step by Step Solution

1. Step 1: Write the proportion equation
   856,870 : 1,861,244 = 1,861,244 : x
2. Step 2: Convert to fraction form
   856,870/1,861,244 = 1,861,244/x
3. Step 3: Cross multiply
   856,870x = 1,861,244 × 1,861,244
4. Step 4: Simplify right side
   856,870x = 3,464,229,227,536
5. Step 5: Solve for x
   x = 3,464,229,227,536/856,870
6. Step 6: Final answer
   x = 4,042,887.75