Finding the Third Proportional to 100,914.50 and 221,510

Step by Step Solution

1. Step 1: Write the proportion equation
   100,914.50 : 221,510 = 221,510 : x
2. Step 2: Convert to fraction form
   100,914.50/221,510 = 221,510/x
3. Step 3: Cross multiply
   100,914.50x = 221,510 × 221,510
4. Step 4: Simplify right side
   100,914.50x = 49,066,680,100
5. Step 5: Solve for x
   x = 49,066,680,100/100,914.50
6. Step 6: Final answer
   x = 486,220.32