Finding the Third Proportional to 65,388 and 138,622

Step by Step Solution

1. Step 1: Write the proportion equation
   65,388 : 138,622 = 138,622 : x
2. Step 2: Convert to fraction form
   65,388/138,622 = 138,622/x
3. Step 3: Cross multiply
   65,388x = 138,622 × 138,622
4. Step 4: Simplify right side
   65,388x = 19,216,058,884
5. Step 5: Solve for x
   x = 19,216,058,884/65,388
6. Step 6: Final answer
   x = 293,877.45