Finding the Third Proportional to 216,642 and 472,650

Step by Step Solution

1. Step 1: Write the proportion equation
   216,642 : 472,650 = 472,650 : x
2. Step 2: Convert to fraction form
   216,642/472,650 = 472,650/x
3. Step 3: Cross multiply
   216,642x = 472,650 × 472,650
4. Step 4: Simplify right side
   216,642x = 223,398,022,500
5. Step 5: Solve for x
   x = 223,398,022,500/216,642
6. Step 6: Final answer
   x = 1,031,185.19