Finding the Third Proportional to 308,616 and 480,967.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,616 : 480,967.50 = 480,967.50 : x
2. Step 2: Convert to fraction form
   308,616/480,967.50 = 480,967.50/x
3. Step 3: Cross multiply
   308,616x = 480,967.50 × 480,967.50
4. Step 4: Simplify right side
   308,616x = 231,329,736,056.25
5. Step 5: Solve for x
   x = 231,329,736,056.25/308,616
6. Step 6: Final answer
   x = 749,571.43