Finding the Third Proportional to 435,623.50 and 660,003

Step by Step Solution

1. Step 1: Write the proportion equation
   435,623.50 : 660,003 = 660,003 : x
2. Step 2: Convert to fraction form
   435,623.50/660,003 = 660,003/x
3. Step 3: Cross multiply
   435,623.50x = 660,003 × 660,003
4. Step 4: Simplify right side
   435,623.50x = 435,603,960,009
5. Step 5: Solve for x
   x = 435,603,960,009/435,623.50
6. Step 6: Final answer
   x = 999,955.14