Finding the Third Proportional to 308,132 and 662,256

Step by Step Solution

1. Step 1: Write the proportion equation
   308,132 : 662,256 = 662,256 : x
2. Step 2: Convert to fraction form
   308,132/662,256 = 662,256/x
3. Step 3: Cross multiply
   308,132x = 662,256 × 662,256
4. Step 4: Simplify right side
   308,132x = 438,583,009,536
5. Step 5: Solve for x
   x = 438,583,009,536/308,132
6. Step 6: Final answer
   x = 1,423,360.80