Finding the Third Proportional to 140,550 and 308,748

Step by Step Solution

1. Step 1: Write the proportion equation
   140,550 : 308,748 = 308,748 : x
2. Step 2: Convert to fraction form
   140,550/308,748 = 308,748/x
3. Step 3: Cross multiply
   140,550x = 308,748 × 308,748
4. Step 4: Simplify right side
   140,550x = 95,325,327,504
5. Step 5: Solve for x
   x = 95,325,327,504/140,550
6. Step 6: Final answer
   x = 678,230.72