Finding the Third Proportional to 90,679.50 and 191,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,679.50 : 191,443.50 = 191,443.50 : x
2. Step 2: Convert to fraction form
   90,679.50/191,443.50 = 191,443.50/x
3. Step 3: Cross multiply
   90,679.50x = 191,443.50 × 191,443.50
4. Step 4: Simplify right side
   90,679.50x = 36,650,613,692.25
5. Step 5: Solve for x
   x = 36,650,613,692.25/90,679.50
6. Step 6: Final answer
   x = 404,177.50