Finding the Third Proportional to 401,070 and 856,261.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,070 : 856,261.50 = 856,261.50 : x
2. Step 2: Convert to fraction form
   401,070/856,261.50 = 856,261.50/x
3. Step 3: Cross multiply
   401,070x = 856,261.50 × 856,261.50
4. Step 4: Simplify right side
   401,070x = 733,183,756,382.25
5. Step 5: Solve for x
   x = 733,183,756,382.25/401,070
6. Step 6: Final answer
   x = 1,828,069.31