Finding the Third Proportional to 140,554 and 306,054

Step by Step Solution

1. Step 1: Write the proportion equation
   140,554 : 306,054 = 306,054 : x
2. Step 2: Convert to fraction form
   140,554/306,054 = 306,054/x
3. Step 3: Cross multiply
   140,554x = 306,054 × 306,054
4. Step 4: Simplify right side
   140,554x = 93,669,050,916
5. Step 5: Solve for x
   x = 93,669,050,916/140,554
6. Step 6: Final answer
   x = 666,427.50