Finding the Third Proportional to 220,825.50 and 478,992

Step by Step Solution

1. Step 1: Write the proportion equation
   220,825.50 : 478,992 = 478,992 : x
2. Step 2: Convert to fraction form
   220,825.50/478,992 = 478,992/x
3. Step 3: Cross multiply
   220,825.50x = 478,992 × 478,992
4. Step 4: Simplify right side
   220,825.50x = 229,433,336,064
5. Step 5: Solve for x
   x = 229,433,336,064/220,825.50
6. Step 6: Final answer
   x = 1,038,980.26