Finding the Third Proportional to 405,567 and 631,273.50

Step by Step Solution

1. Step 1: Write the proportion equation
   405,567 : 631,273.50 = 631,273.50 : x
2. Step 2: Convert to fraction form
   405,567/631,273.50 = 631,273.50/x
3. Step 3: Cross multiply
   405,567x = 631,273.50 × 631,273.50
4. Step 4: Simplify right side
   405,567x = 398,506,231,802.25
5. Step 5: Solve for x
   x = 398,506,231,802.25/405,567
6. Step 6: Final answer
   x = 982,590.38