Finding the Third Proportional to 216,270 and 474,642

Step by Step Solution

1. Step 1: Write the proportion equation
   216,270 : 474,642 = 474,642 : x
2. Step 2: Convert to fraction form
   216,270/474,642 = 474,642/x
3. Step 3: Cross multiply
   216,270x = 474,642 × 474,642
4. Step 4: Simplify right side
   216,270x = 225,285,028,164
5. Step 5: Solve for x
   x = 225,285,028,164/216,270
6. Step 6: Final answer
   x = 1,041,684.14