Finding the Third Proportional to 196,436 and 307,290

Step by Step Solution

1. Step 1: Write the proportion equation
   196,436 : 307,290 = 307,290 : x
2. Step 2: Convert to fraction form
   196,436/307,290 = 307,290/x
3. Step 3: Cross multiply
   196,436x = 307,290 × 307,290
4. Step 4: Simplify right side
   196,436x = 94,427,144,100
5. Step 5: Solve for x
   x = 94,427,144,100/196,436
6. Step 6: Final answer
   x = 480,701.83