Finding the Third Proportional to 121,108 and 266,111

Step by Step Solution

1. Step 1: Write the proportion equation
   121,108 : 266,111 = 266,111 : x
2. Step 2: Convert to fraction form
   121,108/266,111 = 266,111/x
3. Step 3: Cross multiply
   121,108x = 266,111 × 266,111
4. Step 4: Simplify right side
   121,108x = 70,815,064,321
5. Step 5: Solve for x
   x = 70,815,064,321/121,108
6. Step 6: Final answer
   x = 584,726.56