Finding the Third Proportional to 260,005.50 and 558,810

Step by Step Solution

1. Step 1: Write the proportion equation
   260,005.50 : 558,810 = 558,810 : x
2. Step 2: Convert to fraction form
   260,005.50/558,810 = 558,810/x
3. Step 3: Cross multiply
   260,005.50x = 558,810 × 558,810
4. Step 4: Simplify right side
   260,005.50x = 312,268,616,100
5. Step 5: Solve for x
   x = 312,268,616,100/260,005.50
6. Step 6: Final answer
   x = 1,201,007.73