Finding the Third Proportional to 219,361.50 and 478,386

Step by Step Solution

1. Step 1: Write the proportion equation
   219,361.50 : 478,386 = 478,386 : x
2. Step 2: Convert to fraction form
   219,361.50/478,386 = 478,386/x
3. Step 3: Cross multiply
   219,361.50x = 478,386 × 478,386
4. Step 4: Simplify right side
   219,361.50x = 228,853,164,996
5. Step 5: Solve for x
   x = 228,853,164,996/219,361.50
6. Step 6: Final answer
   x = 1,043,269.51