Finding the Third Proportional to 139,219 and 212,092

Step by Step Solution

1. Step 1: Write the proportion equation
   139,219 : 212,092 = 212,092 : x
2. Step 2: Convert to fraction form
   139,219/212,092 = 212,092/x
3. Step 3: Cross multiply
   139,219x = 212,092 × 212,092
4. Step 4: Simplify right side
   139,219x = 44,983,016,464
5. Step 5: Solve for x
   x = 44,983,016,464/139,219
6. Step 6: Final answer
   x = 323,109.75