Finding the Third Proportional to 355,286.25 and 777,003

Step by Step Solution

1. Step 1: Write the proportion equation
   355,286.25 : 777,003 = 777,003 : x
2. Step 2: Convert to fraction form
   355,286.25/777,003 = 777,003/x
3. Step 3: Cross multiply
   355,286.25x = 777,003 × 777,003
4. Step 4: Simplify right side
   355,286.25x = 603,733,662,009
5. Step 5: Solve for x
   x = 603,733,662,009/355,286.25
6. Step 6: Final answer
   x = 1,699,288.00