Finding the Third Proportional to 261,711 and 373,855.50

Step by Step Solution

1. Step 1: Write the proportion equation
   261,711 : 373,855.50 = 373,855.50 : x
2. Step 2: Convert to fraction form
   261,711/373,855.50 = 373,855.50/x
3. Step 3: Cross multiply
   261,711x = 373,855.50 × 373,855.50
4. Step 4: Simplify right side
   261,711x = 139,767,934,880.25
5. Step 5: Solve for x
   x = 139,767,934,880.25/261,711
6. Step 6: Final answer
   x = 534,054.49