Finding the Third Proportional to 355,007 and 775,065.50

Step by Step Solution

1. Step 1: Write the proportion equation
   355,007 : 775,065.50 = 775,065.50 : x
2. Step 2: Convert to fraction form
   355,007/775,065.50 = 775,065.50/x
3. Step 3: Cross multiply
   355,007x = 775,065.50 × 775,065.50
4. Step 4: Simplify right side
   355,007x = 600,726,529,290.25
5. Step 5: Solve for x
   x = 600,726,529,290.25/355,007
6. Step 6: Final answer
   x = 1,692,154.04