Finding the Third Proportional to 219,364 and 478,876

Step by Step Solution

1. Step 1: Write the proportion equation
   219,364 : 478,876 = 478,876 : x
2. Step 2: Convert to fraction form
   219,364/478,876 = 478,876/x
3. Step 3: Cross multiply
   219,364x = 478,876 × 478,876
4. Step 4: Simplify right side
   219,364x = 229,322,223,376
5. Step 5: Solve for x
   x = 229,322,223,376/219,364
6. Step 6: Final answer
   x = 1,045,395.89