Finding the Third Proportional to 407,817 and 622,462.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,817 : 622,462.50 = 622,462.50 : x
2. Step 2: Convert to fraction form
   407,817/622,462.50 = 622,462.50/x
3. Step 3: Cross multiply
   407,817x = 622,462.50 × 622,462.50
4. Step 4: Simplify right side
   407,817x = 387,459,563,906.25
5. Step 5: Solve for x
   x = 387,459,563,906.25/407,817
6. Step 6: Final answer
   x = 950,081.93