Finding the Third Proportional to 359,980.25 and 773,382.25

Step by Step Solution

1. Step 1: Write the proportion equation
   359,980.25 : 773,382.25 = 773,382.25 : x
2. Step 2: Convert to fraction form
   359,980.25/773,382.25 = 773,382.25/x
3. Step 3: Cross multiply
   359,980.25x = 773,382.25 × 773,382.25
4. Step 4: Simplify right side
   359,980.25x = 598,120,104,615.06
5. Step 5: Solve for x
   x = 598,120,104,615.06/359,980.25
6. Step 6: Final answer
   x = 1,661,535.89