Finding the Third Proportional to 305,904 and 656,080.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,904 : 656,080.50 = 656,080.50 : x
2. Step 2: Convert to fraction form
   305,904/656,080.50 = 656,080.50/x
3. Step 3: Cross multiply
   305,904x = 656,080.50 × 656,080.50
4. Step 4: Simplify right side
   305,904x = 430,441,622,480.25
5. Step 5: Solve for x
   x = 430,441,622,480.25/305,904
6. Step 6: Final answer
   x = 1,407,113.42