Finding the Third Proportional to 538,003 and 805,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   538,003 : 805,971.50 = 805,971.50 : x
2. Step 2: Convert to fraction form
   538,003/805,971.50 = 805,971.50/x
3. Step 3: Cross multiply
   538,003x = 805,971.50 × 805,971.50
4. Step 4: Simplify right side
   538,003x = 649,590,058,812.25
5. Step 5: Solve for x
   x = 649,590,058,812.25/538,003
6. Step 6: Final answer
   x = 1,207,409.73