Finding the Third Proportional to 219,284 and 478,168

Step by Step Solution

1. Step 1: Write the proportion equation
   219,284 : 478,168 = 478,168 : x
2. Step 2: Convert to fraction form
   219,284/478,168 = 478,168/x
3. Step 3: Cross multiply
   219,284x = 478,168 × 478,168
4. Step 4: Simplify right side
   219,284x = 228,644,636,224
5. Step 5: Solve for x
   x = 228,644,636,224/219,284
6. Step 6: Final answer
   x = 1,042,687.27