Finding the Third Proportional to 239,987 and 515,588.50

Step by Step Solution

1. Step 1: Write the proportion equation
   239,987 : 515,588.50 = 515,588.50 : x
2. Step 2: Convert to fraction form
   239,987/515,588.50 = 515,588.50/x
3. Step 3: Cross multiply
   239,987x = 515,588.50 × 515,588.50
4. Step 4: Simplify right side
   239,987x = 265,831,501,332.25
5. Step 5: Solve for x
   x = 265,831,501,332.25/239,987
6. Step 6: Final answer
   x = 1,107,691.26