Finding the Third Proportional to 121,274 and 265,870

Step by Step Solution

1. Step 1: Write the proportion equation
   121,274 : 265,870 = 265,870 : x
2. Step 2: Convert to fraction form
   121,274/265,870 = 265,870/x
3. Step 3: Cross multiply
   121,274x = 265,870 × 265,870
4. Step 4: Simplify right side
   121,274x = 70,686,856,900
5. Step 5: Solve for x
   x = 70,686,856,900/121,274
6. Step 6: Final answer
   x = 582,869.01