Finding the Third Proportional to 196,499.67 and 421,011.42

Step by Step Solution

1. Step 1: Write the proportion equation
   196,499.67 : 421,011.42 = 421,011.42 : x
2. Step 2: Convert to fraction form
   196,499.67/421,011.42 = 421,011.42/x
3. Step 3: Cross multiply
   196,499.67x = 421,011.42 × 421,011.42
4. Step 4: Simplify right side
   196,499.67x = 177,250,617,349.21
5. Step 5: Solve for x
   x = 177,250,617,349.21/196,499.67
6. Step 6: Final answer
   x = 902,040.27