Finding the Third Proportional to 115,309 and 250,300

Step by Step Solution

1. Step 1: Write the proportion equation
   115,309 : 250,300 = 250,300 : x
2. Step 2: Convert to fraction form
   115,309/250,300 = 250,300/x
3. Step 3: Cross multiply
   115,309x = 250,300 × 250,300
4. Step 4: Simplify right side
   115,309x = 62,650,090,000
5. Step 5: Solve for x
   x = 62,650,090,000/115,309
6. Step 6: Final answer
   x = 543,323.50