Finding the Third Proportional to 261,826.50 and 570,307.50

Step by Step Solution

1. Step 1: Write the proportion equation
   261,826.50 : 570,307.50 = 570,307.50 : x
2. Step 2: Convert to fraction form
   261,826.50/570,307.50 = 570,307.50/x
3. Step 3: Cross multiply
   261,826.50x = 570,307.50 × 570,307.50
4. Step 4: Simplify right side
   261,826.50x = 325,250,644,556.25
5. Step 5: Solve for x
   x = 325,250,644,556.25/261,826.50
6. Step 6: Final answer
   x = 1,242,237.30