Finding the Third Proportional to 272,308.50 and 585,643.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,308.50 : 585,643.50 = 585,643.50 : x
2. Step 2: Convert to fraction form
   272,308.50/585,643.50 = 585,643.50/x
3. Step 3: Cross multiply
   272,308.50x = 585,643.50 × 585,643.50
4. Step 4: Simplify right side
   272,308.50x = 342,978,309,092.25
5. Step 5: Solve for x
   x = 342,978,309,092.25/272,308.50
6. Step 6: Final answer
   x = 1,259,521.13