Finding the Third Proportional to 196,807.50 and 431,442

Step by Step Solution

1. Step 1: Write the proportion equation
   196,807.50 : 431,442 = 431,442 : x
2. Step 2: Convert to fraction form
   196,807.50/431,442 = 431,442/x
3. Step 3: Cross multiply
   196,807.50x = 431,442 × 431,442
4. Step 4: Simplify right side
   196,807.50x = 186,142,199,364
5. Step 5: Solve for x
   x = 186,142,199,364/196,807.50
6. Step 6: Final answer
   x = 945,808.46