Finding the Third Proportional to 535,725 and 809,061.75

Step by Step Solution

1. Step 1: Write the proportion equation
   535,725 : 809,061.75 = 809,061.75 : x
2. Step 2: Convert to fraction form
   535,725/809,061.75 = 809,061.75/x
3. Step 3: Cross multiply
   535,725x = 809,061.75 × 809,061.75
4. Step 4: Simplify right side
   535,725x = 654,580,915,313.06
5. Step 5: Solve for x
   x = 654,580,915,313.06/535,725
6. Step 6: Final answer
   x = 1,221,859.94