Finding the Third Proportional to 266,426 and 570,640

Step by Step Solution

1. Step 1: Write the proportion equation
   266,426 : 570,640 = 570,640 : x
2. Step 2: Convert to fraction form
   266,426/570,640 = 570,640/x
3. Step 3: Cross multiply
   266,426x = 570,640 × 570,640
4. Step 4: Simplify right side
   266,426x = 325,630,009,600
5. Step 5: Solve for x
   x = 325,630,009,600/266,426
6. Step 6: Final answer
   x = 1,222,215.59