Finding the Third Proportional to 275,991 and 411,070.50

Step by Step Solution

1. Step 1: Write the proportion equation
   275,991 : 411,070.50 = 411,070.50 : x
2. Step 2: Convert to fraction form
   275,991/411,070.50 = 411,070.50/x
3. Step 3: Cross multiply
   275,991x = 411,070.50 × 411,070.50
4. Step 4: Simplify right side
   275,991x = 168,978,955,970.25
5. Step 5: Solve for x
   x = 168,978,955,970.25/275,991
6. Step 6: Final answer
   x = 612,262.56