Finding the Third Proportional to 219,576 and 472,440

Step by Step Solution

1. Step 1: Write the proportion equation
   219,576 : 472,440 = 472,440 : x
2. Step 2: Convert to fraction form
   219,576/472,440 = 472,440/x
3. Step 3: Cross multiply
   219,576x = 472,440 × 472,440
4. Step 4: Simplify right side
   219,576x = 223,199,553,600
5. Step 5: Solve for x
   x = 223,199,553,600/219,576
6. Step 6: Final answer
   x = 1,016,502.50