Finding the Third Proportional to 221,412 and 352,481.63

Step by Step Solution

1. Step 1: Write the proportion equation
   221,412 : 352,481.63 = 352,481.63 : x
2. Step 2: Convert to fraction form
   221,412/352,481.63 = 352,481.63/x
3. Step 3: Cross multiply
   221,412x = 352,481.63 × 352,481.63
4. Step 4: Simplify right side
   221,412x = 124,243,295,962.64
5. Step 5: Solve for x
   x = 124,243,295,962.64/221,412
6. Step 6: Final answer
   x = 561,140.75