Finding the Third Proportional to 108,426.50 and 260,888

Step by Step Solution

1. Step 1: Write the proportion equation
   108,426.50 : 260,888 = 260,888 : x
2. Step 2: Convert to fraction form
   108,426.50/260,888 = 260,888/x
3. Step 3: Cross multiply
   108,426.50x = 260,888 × 260,888
4. Step 4: Simplify right side
   108,426.50x = 68,062,548,544
5. Step 5: Solve for x
   x = 68,062,548,544/108,426.50
6. Step 6: Final answer
   x = 627,729.83