Finding the Third Proportional to 140,088 and 299,856

Step by Step Solution

1. Step 1: Write the proportion equation
   140,088 : 299,856 = 299,856 : x
2. Step 2: Convert to fraction form
   140,088/299,856 = 299,856/x
3. Step 3: Cross multiply
   140,088x = 299,856 × 299,856
4. Step 4: Simplify right side
   140,088x = 89,913,620,736
5. Step 5: Solve for x
   x = 89,913,620,736/140,088
6. Step 6: Final answer
   x = 641,836.71