Finding the Third Proportional to 266,220 and 581,566.50

Step by Step Solution

1. Step 1: Write the proportion equation
   266,220 : 581,566.50 = 581,566.50 : x
2. Step 2: Convert to fraction form
   266,220/581,566.50 = 581,566.50/x
3. Step 3: Cross multiply
   266,220x = 581,566.50 × 581,566.50
4. Step 4: Simplify right side
   266,220x = 338,219,593,922.25
5. Step 5: Solve for x
   x = 338,219,593,922.25/266,220
6. Step 6: Final answer
   x = 1,270,451.48