Finding the Third Proportional to 219,332 and 478,324

Step by Step Solution

1. Step 1: Write the proportion equation
   219,332 : 478,324 = 478,324 : x
2. Step 2: Convert to fraction form
   219,332/478,324 = 478,324/x
3. Step 3: Cross multiply
   219,332x = 478,324 × 478,324
4. Step 4: Simplify right side
   219,332x = 228,793,848,976
5. Step 5: Solve for x
   x = 228,793,848,976/219,332
6. Step 6: Final answer
   x = 1,043,139.39