Finding the Third Proportional to 394,410.75 and 564,012

Step by Step Solution

1. Step 1: Write the proportion equation
   394,410.75 : 564,012 = 564,012 : x
2. Step 2: Convert to fraction form
   394,410.75/564,012 = 564,012/x
3. Step 3: Cross multiply
   394,410.75x = 564,012 × 564,012
4. Step 4: Simplify right side
   394,410.75x = 318,109,536,144
5. Step 5: Solve for x
   x = 318,109,536,144/394,410.75
6. Step 6: Final answer
   x = 806,543.78