Finding the Third Proportional to 196,924.50 and 421,870

Step by Step Solution

1. Step 1: Write the proportion equation
   196,924.50 : 421,870 = 421,870 : x
2. Step 2: Convert to fraction form
   196,924.50/421,870 = 421,870/x
3. Step 3: Cross multiply
   196,924.50x = 421,870 × 421,870
4. Step 4: Simplify right side
   196,924.50x = 177,974,296,900
5. Step 5: Solve for x
   x = 177,974,296,900/196,924.50
6. Step 6: Final answer
   x = 903,769.20