Finding the Third Proportional to 129,195 and 277,069.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,195 : 277,069.50 = 277,069.50 : x
2. Step 2: Convert to fraction form
   129,195/277,069.50 = 277,069.50/x
3. Step 3: Cross multiply
   129,195x = 277,069.50 × 277,069.50
4. Step 4: Simplify right side
   129,195x = 76,767,507,830.25
5. Step 5: Solve for x
   x = 76,767,507,830.25/129,195
6. Step 6: Final answer
   x = 594,198.75