Finding the Third Proportional to 220,822.50 and 478,986

Step by Step Solution

1. Step 1: Write the proportion equation
   220,822.50 : 478,986 = 478,986 : x
2. Step 2: Convert to fraction form
   220,822.50/478,986 = 478,986/x
3. Step 3: Cross multiply
   220,822.50x = 478,986 × 478,986
4. Step 4: Simplify right side
   220,822.50x = 229,427,588,196
5. Step 5: Solve for x
   x = 229,427,588,196/220,822.50
6. Step 6: Final answer
   x = 1,038,968.35