Finding the Third Proportional to 219,364.50 and 478,878

Step by Step Solution

1. Step 1: Write the proportion equation
   219,364.50 : 478,878 = 478,878 : x
2. Step 2: Convert to fraction form
   219,364.50/478,878 = 478,878/x
3. Step 3: Cross multiply
   219,364.50x = 478,878 × 478,878
4. Step 4: Simplify right side
   219,364.50x = 229,324,138,884
5. Step 5: Solve for x
   x = 229,324,138,884/219,364.50
6. Step 6: Final answer
   x = 1,045,402.24