Finding the Third Proportional to 333,726 and 691,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   333,726 : 691,108.50 = 691,108.50 : x
2. Step 2: Convert to fraction form
   333,726/691,108.50 = 691,108.50/x
3. Step 3: Cross multiply
   333,726x = 691,108.50 × 691,108.50
4. Step 4: Simplify right side
   333,726x = 477,630,958,772.25
5. Step 5: Solve for x
   x = 477,630,958,772.25/333,726
6. Step 6: Final answer
   x = 1,431,206.91