Finding the Third Proportional to 139,896 and 302,128

Step by Step Solution

1. Step 1: Write the proportion equation
   139,896 : 302,128 = 302,128 : x
2. Step 2: Convert to fraction form
   139,896/302,128 = 302,128/x
3. Step 3: Cross multiply
   139,896x = 302,128 × 302,128
4. Step 4: Simplify right side
   139,896x = 91,281,328,384
5. Step 5: Solve for x
   x = 91,281,328,384/139,896
6. Step 6: Final answer
   x = 652,494.20