Finding the Third Proportional to 67,878 and 147,798

Step by Step Solution

1. Step 1: Write the proportion equation
   67,878 : 147,798 = 147,798 : x
2. Step 2: Convert to fraction form
   67,878/147,798 = 147,798/x
3. Step 3: Cross multiply
   67,878x = 147,798 × 147,798
4. Step 4: Simplify right side
   67,878x = 21,844,248,804
5. Step 5: Solve for x
   x = 21,844,248,804/67,878
6. Step 6: Final answer
   x = 321,816.33