Finding the Third Proportional to 221,881.50 and 486,000

Step by Step Solution

1. Step 1: Write the proportion equation
   221,881.50 : 486,000 = 486,000 : x
2. Step 2: Convert to fraction form
   221,881.50/486,000 = 486,000/x
3. Step 3: Cross multiply
   221,881.50x = 486,000 × 486,000
4. Step 4: Simplify right side
   221,881.50x = 236,196,000,000
5. Step 5: Solve for x
   x = 236,196,000,000/221,881.50
6. Step 6: Final answer
   x = 1,064,514.17