Finding the Third Proportional to 219,370.50 and 478,890

Step by Step Solution

1. Step 1: Write the proportion equation
   219,370.50 : 478,890 = 478,890 : x
2. Step 2: Convert to fraction form
   219,370.50/478,890 = 478,890/x
3. Step 3: Cross multiply
   219,370.50x = 478,890 × 478,890
4. Step 4: Simplify right side
   219,370.50x = 229,335,632,100
5. Step 5: Solve for x
   x = 229,335,632,100/219,370.50
6. Step 6: Final answer
   x = 1,045,426.04