Finding the Third Proportional to 139,528 and 215,652

Step by Step Solution

1. Step 1: Write the proportion equation
   139,528 : 215,652 = 215,652 : x
2. Step 2: Convert to fraction form
   139,528/215,652 = 215,652/x
3. Step 3: Cross multiply
   139,528x = 215,652 × 215,652
4. Step 4: Simplify right side
   139,528x = 46,505,785,104
5. Step 5: Solve for x
   x = 46,505,785,104/139,528
6. Step 6: Final answer
   x = 333,307.90