Finding the Third Proportional to 129,919 and 293,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,919 : 293,443.50 = 293,443.50 : x
2. Step 2: Convert to fraction form
   129,919/293,443.50 = 293,443.50/x
3. Step 3: Cross multiply
   129,919x = 293,443.50 × 293,443.50
4. Step 4: Simplify right side
   129,919x = 86,109,087,692.25
5. Step 5: Solve for x
   x = 86,109,087,692.25/129,919
6. Step 6: Final answer
   x = 662,790.57