Finding the Third Proportional to 239,838 and 515,962.50

Step by Step Solution

1. Step 1: Write the proportion equation
   239,838 : 515,962.50 = 515,962.50 : x
2. Step 2: Convert to fraction form
   239,838/515,962.50 = 515,962.50/x
3. Step 3: Cross multiply
   239,838x = 515,962.50 × 515,962.50
4. Step 4: Simplify right side
   239,838x = 266,217,301,406.25
5. Step 5: Solve for x
   x = 266,217,301,406.25/239,838
6. Step 6: Final answer
   x = 1,109,988.00