Finding the Third Proportional to 236,709 and 357,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   236,709 : 357,520.50 = 357,520.50 : x
2. Step 2: Convert to fraction form
   236,709/357,520.50 = 357,520.50/x
3. Step 3: Cross multiply
   236,709x = 357,520.50 × 357,520.50
4. Step 4: Simplify right side
   236,709x = 127,820,907,920.25
5. Step 5: Solve for x
   x = 127,820,907,920.25/236,709
6. Step 6: Final answer
   x = 539,991.75