Finding the Third Proportional to 219,324 and 478,310

Step by Step Solution

1. Step 1: Write the proportion equation
   219,324 : 478,310 = 478,310 : x
2. Step 2: Convert to fraction form
   219,324/478,310 = 478,310/x
3. Step 3: Cross multiply
   219,324x = 478,310 × 478,310
4. Step 4: Simplify right side
   219,324x = 228,780,456,100
5. Step 5: Solve for x
   x = 228,780,456,100/219,324
6. Step 6: Final answer
   x = 1,043,116.38