Finding the Third Proportional to 196,931.25 and 431,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   196,931.25 : 431,608.50 = 431,608.50 : x
2. Step 2: Convert to fraction form
   196,931.25/431,608.50 = 431,608.50/x
3. Step 3: Cross multiply
   196,931.25x = 431,608.50 × 431,608.50
4. Step 4: Simplify right side
   196,931.25x = 186,285,897,272.25
5. Step 5: Solve for x
   x = 186,285,897,272.25/196,931.25
6. Step 6: Final answer
   x = 945,943.81