Finding the Third Proportional to 309,281 and 473,905.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,281 : 473,905.50 = 473,905.50 : x
2. Step 2: Convert to fraction form
   309,281/473,905.50 = 473,905.50/x
3. Step 3: Cross multiply
   309,281x = 473,905.50 × 473,905.50
4. Step 4: Simplify right side
   309,281x = 224,586,422,930.25
5. Step 5: Solve for x
   x = 224,586,422,930.25/309,281
6. Step 6: Final answer
   x = 726,156.55