Finding the Third Proportional to 139,194 and 211,558.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,194 : 211,558.50 = 211,558.50 : x
2. Step 2: Convert to fraction form
   139,194/211,558.50 = 211,558.50/x
3. Step 3: Cross multiply
   139,194x = 211,558.50 × 211,558.50
4. Step 4: Simplify right side
   139,194x = 44,756,998,922.25
5. Step 5: Solve for x
   x = 44,756,998,922.25/139,194
6. Step 6: Final answer
   x = 321,544.02