Finding the Third Proportional to 196,870.50 and 305,418

Step by Step Solution

1. Step 1: Write the proportion equation
   196,870.50 : 305,418 = 305,418 : x
2. Step 2: Convert to fraction form
   196,870.50/305,418 = 305,418/x
3. Step 3: Cross multiply
   196,870.50x = 305,418 × 305,418
4. Step 4: Simplify right side
   196,870.50x = 93,280,154,724
5. Step 5: Solve for x
   x = 93,280,154,724/196,870.50
6. Step 6: Final answer
   x = 473,814.79