Finding the Third Proportional to 296,280 and 423,382.50

Step by Step Solution

1. Step 1: Write the proportion equation
   296,280 : 423,382.50 = 423,382.50 : x
2. Step 2: Convert to fraction form
   296,280/423,382.50 = 423,382.50/x
3. Step 3: Cross multiply
   296,280x = 423,382.50 × 423,382.50
4. Step 4: Simplify right side
   296,280x = 179,252,741,306.25
5. Step 5: Solve for x
   x = 179,252,741,306.25/296,280
6. Step 6: Final answer
   x = 605,011.28