Finding the Third Proportional to 266,383.69 and 406,223.86

Step by Step Solution

1. Step 1: Write the proportion equation
   266,383.69 : 406,223.86 = 406,223.86 : x
2. Step 2: Convert to fraction form
   266,383.69/406,223.86 = 406,223.86/x
3. Step 3: Cross multiply
   266,383.69x = 406,223.86 × 406,223.86
4. Step 4: Simplify right side
   266,383.69x = 165,017,823,925.52
5. Step 5: Solve for x
   x = 165,017,823,925.52/266,383.69
6. Step 6: Final answer
   x = 619,474.21