Finding the Third Proportional to 121,392 and 266,874.75

Step by Step Solution

1. Step 1: Write the proportion equation
   121,392 : 266,874.75 = 266,874.75 : x
2. Step 2: Convert to fraction form
   121,392/266,874.75 = 266,874.75/x
3. Step 3: Cross multiply
   121,392x = 266,874.75 × 266,874.75
4. Step 4: Simplify right side
   121,392x = 71,222,132,187.56
5. Step 5: Solve for x
   x = 71,222,132,187.56/121,392
6. Step 6: Final answer
   x = 586,711.91