Finding the Third Proportional to 100,884.50 and 221,361

Step by Step Solution

1. Step 1: Write the proportion equation
   100,884.50 : 221,361 = 221,361 : x
2. Step 2: Convert to fraction form
   100,884.50/221,361 = 221,361/x
3. Step 3: Cross multiply
   100,884.50x = 221,361 × 221,361
4. Step 4: Simplify right side
   100,884.50x = 49,000,692,321
5. Step 5: Solve for x
   x = 49,000,692,321/100,884.50
6. Step 6: Final answer
   x = 485,710.81