Finding the Third Proportional to 325,485 and 492,817.50

Step by Step Solution

1. Step 1: Write the proportion equation
   325,485 : 492,817.50 = 492,817.50 : x
2. Step 2: Convert to fraction form
   325,485/492,817.50 = 492,817.50/x
3. Step 3: Cross multiply
   325,485x = 492,817.50 × 492,817.50
4. Step 4: Simplify right side
   325,485x = 242,869,088,306.25
5. Step 5: Solve for x
   x = 242,869,088,306.25/325,485
6. Step 6: Final answer
   x = 746,175.98