Finding the Third Proportional to 50,078 and 70,438

Step by Step Solution

1. Step 1: Write the proportion equation
   50,078 : 70,438 = 70,438 : x
2. Step 2: Convert to fraction form
   50,078/70,438 = 70,438/x
3. Step 3: Cross multiply
   50,078x = 70,438 × 70,438
4. Step 4: Simplify right side
   50,078x = 4,961,511,844
5. Step 5: Solve for x
   x = 4,961,511,844/50,078
6. Step 6: Final answer
   x = 99,075.68