Finding the Third Proportional to 196,799 and 407,602

Step by Step Solution

1. Step 1: Write the proportion equation
   196,799 : 407,602 = 407,602 : x
2. Step 2: Convert to fraction form
   196,799/407,602 = 407,602/x
3. Step 3: Cross multiply
   196,799x = 407,602 × 407,602
4. Step 4: Simplify right side
   196,799x = 166,139,390,404
5. Step 5: Solve for x
   x = 166,139,390,404/196,799
6. Step 6: Final answer
   x = 844,208.51