Finding the Third Proportional to 269,770.50 and 405,351

Step by Step Solution

1. Step 1: Write the proportion equation
   269,770.50 : 405,351 = 405,351 : x
2. Step 2: Convert to fraction form
   269,770.50/405,351 = 405,351/x
3. Step 3: Cross multiply
   269,770.50x = 405,351 × 405,351
4. Step 4: Simplify right side
   269,770.50x = 164,309,433,201
5. Step 5: Solve for x
   x = 164,309,433,201/269,770.50
6. Step 6: Final answer
   x = 609,071.17