Finding the Third Proportional to 220,320 and 297,264

Step by Step Solution

1. Step 1: Write the proportion equation
   220,320 : 297,264 = 297,264 : x
2. Step 2: Convert to fraction form
   220,320/297,264 = 297,264/x
3. Step 3: Cross multiply
   220,320x = 297,264 × 297,264
4. Step 4: Simplify right side
   220,320x = 88,365,885,696
5. Step 5: Solve for x
   x = 88,365,885,696/220,320
6. Step 6: Final answer
   x = 401,079.73