Finding the Third Proportional to 505,143 and 799,726.50

Step by Step Solution

1. Step 1: Write the proportion equation
   505,143 : 799,726.50 = 799,726.50 : x
2. Step 2: Convert to fraction form
   505,143/799,726.50 = 799,726.50/x
3. Step 3: Cross multiply
   505,143x = 799,726.50 × 799,726.50
4. Step 4: Simplify right side
   505,143x = 639,562,474,802.25
5. Step 5: Solve for x
   x = 639,562,474,802.25/505,143
6. Step 6: Final answer
   x = 1,266,101.83