Finding the Third Proportional to 219,330 and 478,326

Step by Step Solution

1. Step 1: Write the proportion equation
   219,330 : 478,326 = 478,326 : x
2. Step 2: Convert to fraction form
   219,330/478,326 = 478,326/x
3. Step 3: Cross multiply
   219,330x = 478,326 × 478,326
4. Step 4: Simplify right side
   219,330x = 228,795,762,276
5. Step 5: Solve for x
   x = 228,795,762,276/219,330
6. Step 6: Final answer
   x = 1,043,157.63