Finding the Third Proportional to 361,806 and 531,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,806 : 531,868.50 = 531,868.50 : x
2. Step 2: Convert to fraction form
   361,806/531,868.50 = 531,868.50/x
3. Step 3: Cross multiply
   361,806x = 531,868.50 × 531,868.50
4. Step 4: Simplify right side
   361,806x = 282,884,101,292.25
5. Step 5: Solve for x
   x = 282,884,101,292.25/361,806
6. Step 6: Final answer
   x = 781,866.81