Finding the Third Proportional to 219,361.50 and 478,872

Step by Step Solution

1. Step 1: Write the proportion equation
   219,361.50 : 478,872 = 478,872 : x
2. Step 2: Convert to fraction form
   219,361.50/478,872 = 478,872/x
3. Step 3: Cross multiply
   219,361.50x = 478,872 × 478,872
4. Step 4: Simplify right side
   219,361.50x = 229,318,392,384
5. Step 5: Solve for x
   x = 229,318,392,384/219,361.50
6. Step 6: Final answer
   x = 1,045,390.34