Finding the Third Proportional to 221,571 and 487,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,571 : 487,426.50 = 487,426.50 : x
2. Step 2: Convert to fraction form
   221,571/487,426.50 = 487,426.50/x
3. Step 3: Cross multiply
   221,571x = 487,426.50 × 487,426.50
4. Step 4: Simplify right side
   221,571x = 237,584,592,902.25
5. Step 5: Solve for x
   x = 237,584,592,902.25/221,571
6. Step 6: Final answer
   x = 1,072,272.96