Finding the Third Proportional to 262,308 and 310,747.50

Step by Step Solution

1. Step 1: Write the proportion equation
   262,308 : 310,747.50 = 310,747.50 : x
2. Step 2: Convert to fraction form
   262,308/310,747.50 = 310,747.50/x
3. Step 3: Cross multiply
   262,308x = 310,747.50 × 310,747.50
4. Step 4: Simplify right side
   262,308x = 96,564,008,756.25
5. Step 5: Solve for x
   x = 96,564,008,756.25/262,308
6. Step 6: Final answer
   x = 368,132.15