Finding the Third Proportional to 221,397 and 475,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,397 : 475,042.50 = 475,042.50 : x
2. Step 2: Convert to fraction form
   221,397/475,042.50 = 475,042.50/x
3. Step 3: Cross multiply
   221,397x = 475,042.50 × 475,042.50
4. Step 4: Simplify right side
   221,397x = 225,665,376,806.25
5. Step 5: Solve for x
   x = 225,665,376,806.25/221,397
6. Step 6: Final answer
   x = 1,019,279.29