Finding the Third Proportional to 100,894.50 and 221,470

Step by Step Solution

1. Step 1: Write the proportion equation
   100,894.50 : 221,470 = 221,470 : x
2. Step 2: Convert to fraction form
   100,894.50/221,470 = 221,470/x
3. Step 3: Cross multiply
   100,894.50x = 221,470 × 221,470
4. Step 4: Simplify right side
   100,894.50x = 49,048,960,900
5. Step 5: Solve for x
   x = 49,048,960,900/100,894.50
6. Step 6: Final answer
   x = 486,141.08