Finding the Third Proportional to 221,570 and 483,240

Step by Step Solution

1. Step 1: Write the proportion equation
   221,570 : 483,240 = 483,240 : x
2. Step 2: Convert to fraction form
   221,570/483,240 = 483,240/x
3. Step 3: Cross multiply
   221,570x = 483,240 × 483,240
4. Step 4: Simplify right side
   221,570x = 233,520,897,600
5. Step 5: Solve for x
   x = 233,520,897,600/221,570
6. Step 6: Final answer
   x = 1,053,937.35