Finding the Third Proportional to 142,518 and 307,878

Step by Step Solution

1. Step 1: Write the proportion equation
   142,518 : 307,878 = 307,878 : x
2. Step 2: Convert to fraction form
   142,518/307,878 = 307,878/x
3. Step 3: Cross multiply
   142,518x = 307,878 × 307,878
4. Step 4: Simplify right side
   142,518x = 94,788,862,884
5. Step 5: Solve for x
   x = 94,788,862,884/142,518
6. Step 6: Final answer
   x = 665,100.99