Finding the Third Proportional to 221,721 and 476,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   221,721 : 476,656.50 = 476,656.50 : x
2. Step 2: Convert to fraction form
   221,721/476,656.50 = 476,656.50/x
3. Step 3: Cross multiply
   221,721x = 476,656.50 × 476,656.50
4. Step 4: Simplify right side
   221,721x = 227,201,418,992.25
5. Step 5: Solve for x
   x = 227,201,418,992.25/221,721
6. Step 6: Final answer
   x = 1,024,717.64