Finding the Third Proportional to 211,320 and 469,890

Step by Step Solution

1. Step 1: Write the proportion equation
   211,320 : 469,890 = 469,890 : x
2. Step 2: Convert to fraction form
   211,320/469,890 = 469,890/x
3. Step 3: Cross multiply
   211,320x = 469,890 × 469,890
4. Step 4: Simplify right side
   211,320x = 220,796,612,100
5. Step 5: Solve for x
   x = 220,796,612,100/211,320
6. Step 6: Final answer
   x = 1,044,844.84