Finding the Third Proportional to 269,428.50 and 449,028

Step by Step Solution

1. Step 1: Write the proportion equation
   269,428.50 : 449,028 = 449,028 : x
2. Step 2: Convert to fraction form
   269,428.50/449,028 = 449,028/x
3. Step 3: Cross multiply
   269,428.50x = 449,028 × 449,028
4. Step 4: Simplify right side
   269,428.50x = 201,626,144,784
5. Step 5: Solve for x
   x = 201,626,144,784/269,428.50
6. Step 6: Final answer
   x = 748,347.50