Finding the Third Proportional to 410,185 and 620,944.50

Step by Step Solution

1. Step 1: Write the proportion equation
   410,185 : 620,944.50 = 620,944.50 : x
2. Step 2: Convert to fraction form
   410,185/620,944.50 = 620,944.50/x
3. Step 3: Cross multiply
   410,185x = 620,944.50 × 620,944.50
4. Step 4: Simplify right side
   410,185x = 385,572,072,080.25
5. Step 5: Solve for x
   x = 385,572,072,080.25/410,185
6. Step 6: Final answer
   x = 939,995.54