Finding the Third Proportional to 571,112 and 856,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   571,112 : 856,789.50 = 856,789.50 : x
2. Step 2: Convert to fraction form
   571,112/856,789.50 = 856,789.50/x
3. Step 3: Cross multiply
   571,112x = 856,789.50 × 856,789.50
4. Step 4: Simplify right side
   571,112x = 734,088,247,310.25
5. Step 5: Solve for x
   x = 734,088,247,310.25/571,112
6. Step 6: Final answer
   x = 1,285,366.53