Finding the Third Proportional to 269,433 and 438,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269,433 : 438,031.50 = 438,031.50 : x
2. Step 2: Convert to fraction form
   269,433/438,031.50 = 438,031.50/x
3. Step 3: Cross multiply
   269,433x = 438,031.50 × 438,031.50
4. Step 4: Simplify right side
   269,433x = 191,871,594,992.25
5. Step 5: Solve for x
   x = 191,871,594,992.25/269,433
6. Step 6: Final answer
   x = 712,131.01