Finding the Third Proportional to 221,388 and 475,027.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,388 : 475,027.50 = 475,027.50 : x
2. Step 2: Convert to fraction form
   221,388/475,027.50 = 475,027.50/x
3. Step 3: Cross multiply
   221,388x = 475,027.50 × 475,027.50
4. Step 4: Simplify right side
   221,388x = 225,651,125,756.25
5. Step 5: Solve for x
   x = 225,651,125,756.25/221,388
6. Step 6: Final answer
   x = 1,019,256.35