Finding the Third Proportional to 296,334 and 640,055.25

Step by Step Solution

1. Step 1: Write the proportion equation
   296,334 : 640,055.25 = 640,055.25 : x
2. Step 2: Convert to fraction form
   296,334/640,055.25 = 640,055.25/x
3. Step 3: Cross multiply
   296,334x = 640,055.25 × 640,055.25
4. Step 4: Simplify right side
   296,334x = 409,670,723,052.56
5. Step 5: Solve for x
   x = 409,670,723,052.56/296,334
6. Step 6: Final answer
   x = 1,382,462.77