Finding the Third Proportional to 196,434 and 428,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   196,434 : 428,851.50 = 428,851.50 : x
2. Step 2: Convert to fraction form
   196,434/428,851.50 = 428,851.50/x
3. Step 3: Cross multiply
   196,434x = 428,851.50 × 428,851.50
4. Step 4: Simplify right side
   196,434x = 183,913,609,052.25
5. Step 5: Solve for x
   x = 183,913,609,052.25/196,434
6. Step 6: Final answer
   x = 936,261.59