Finding the Third Proportional to 138,195 and 220,333.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,195 : 220,333.50 = 220,333.50 : x
2. Step 2: Convert to fraction form
   138,195/220,333.50 = 220,333.50/x
3. Step 3: Cross multiply
   138,195x = 220,333.50 × 220,333.50
4. Step 4: Simplify right side
   138,195x = 48,546,851,222.25
5. Step 5: Solve for x
   x = 48,546,851,222.25/138,195
6. Step 6: Final answer
   x = 351,292.39