Finding the Third Proportional to 355,491 and 760,804.50

Step by Step Solution

1. Step 1: Write the proportion equation
   355,491 : 760,804.50 = 760,804.50 : x
2. Step 2: Convert to fraction form
   355,491/760,804.50 = 760,804.50/x
3. Step 3: Cross multiply
   355,491x = 760,804.50 × 760,804.50
4. Step 4: Simplify right side
   355,491x = 578,823,487,220.25
5. Step 5: Solve for x
   x = 578,823,487,220.25/355,491
6. Step 6: Final answer
   x = 1,628,236.68