Finding the Third Proportional to 196,230 and 423,818

Step by Step Solution

1. Step 1: Write the proportion equation
   196,230 : 423,818 = 423,818 : x
2. Step 2: Convert to fraction form
   196,230/423,818 = 423,818/x
3. Step 3: Cross multiply
   196,230x = 423,818 × 423,818
4. Step 4: Simplify right side
   196,230x = 179,621,697,124
5. Step 5: Solve for x
   x = 179,621,697,124/196,230
6. Step 6: Final answer
   x = 915,363.08