Finding the Third Proportional to 566,064 and 856,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   566,064 : 856,399.50 = 856,399.50 : x
2. Step 2: Convert to fraction form
   566,064/856,399.50 = 856,399.50/x
3. Step 3: Cross multiply
   566,064x = 856,399.50 × 856,399.50
4. Step 4: Simplify right side
   566,064x = 733,420,103,600.25
5. Step 5: Solve for x
   x = 733,420,103,600.25/566,064
6. Step 6: Final answer
   x = 1,295,648.73