Finding the Third Proportional to 131,412 and 205,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,412 : 205,868.50 = 205,868.50 : x
2. Step 2: Convert to fraction form
   131,412/205,868.50 = 205,868.50/x
3. Step 3: Cross multiply
   131,412x = 205,868.50 × 205,868.50
4. Step 4: Simplify right side
   131,412x = 42,381,839,292.25
5. Step 5: Solve for x
   x = 42,381,839,292.25/131,412
6. Step 6: Final answer
   x = 322,511.18