Finding the Third Proportional to 856,818 and 1,861,132.50

Step by Step Solution

1. Step 1: Write the proportion equation
   856,818 : 1,861,132.50 = 1,861,132.50 : x
2. Step 2: Convert to fraction form
   856,818/1,861,132.50 = 1,861,132.50/x
3. Step 3: Cross multiply
   856,818x = 1,861,132.50 × 1,861,132.50
4. Step 4: Simplify right side
   856,818x = 3,463,814,182,556.25
5. Step 5: Solve for x
   x = 3,463,814,182,556.25/856,818
6. Step 6: Final answer
   x = 4,042,648.71