Finding the Third Proportional to 123,216 and 196,122

Step by Step Solution

1. Step 1: Write the proportion equation
   123,216 : 196,122 = 196,122 : x
2. Step 2: Convert to fraction form
   123,216/196,122 = 196,122/x
3. Step 3: Cross multiply
   123,216x = 196,122 × 196,122
4. Step 4: Simplify right side
   123,216x = 38,463,838,884
5. Step 5: Solve for x
   x = 38,463,838,884/123,216
6. Step 6: Final answer
   x = 312,165.94