Finding the Third Proportional to 260,435.25 and 528,109.88

Step by Step Solution

1. Step 1: Write the proportion equation
   260,435.25 : 528,109.88 = 528,109.88 : x
2. Step 2: Convert to fraction form
   260,435.25/528,109.88 = 528,109.88/x
3. Step 3: Cross multiply
   260,435.25x = 528,109.88 × 528,109.88
4. Step 4: Simplify right side
   260,435.25x = 278,900,040,072.52
5. Step 5: Solve for x
   x = 278,900,040,072.52/260,435.25
6. Step 6: Final answer
   x = 1,070,899.73