Finding the Third Proportional to 209,705 and 456,274

Step by Step Solution

1. Step 1: Write the proportion equation
   209,705 : 456,274 = 456,274 : x
2. Step 2: Convert to fraction form
   209,705/456,274 = 456,274/x
3. Step 3: Cross multiply
   209,705x = 456,274 × 456,274
4. Step 4: Simplify right side
   209,705x = 208,185,963,076
5. Step 5: Solve for x
   x = 208,185,963,076/209,705
6. Step 6: Final answer
   x = 992,756.32