Finding the Third Proportional to 293,886 and 439,688.25

Step by Step Solution

1. Step 1: Write the proportion equation
   293,886 : 439,688.25 = 439,688.25 : x
2. Step 2: Convert to fraction form
   293,886/439,688.25 = 439,688.25/x
3. Step 3: Cross multiply
   293,886x = 439,688.25 × 439,688.25
4. Step 4: Simplify right side
   293,886x = 193,325,757,188.06
5. Step 5: Solve for x
   x = 193,325,757,188.06/293,886
6. Step 6: Final answer
   x = 657,825.68