Finding the Third Proportional to 150,012 and 316,878

Step by Step Solution

1. Step 1: Write the proportion equation
   150,012 : 316,878 = 316,878 : x
2. Step 2: Convert to fraction form
   150,012/316,878 = 316,878/x
3. Step 3: Cross multiply
   150,012x = 316,878 × 316,878
4. Step 4: Simplify right side
   150,012x = 100,411,666,884
5. Step 5: Solve for x
   x = 100,411,666,884/150,012
6. Step 6: Final answer
   x = 669,357.56