Finding the Third Proportional to 80,389.50 and 121,404

Step by Step Solution

1. Step 1: Write the proportion equation
   80,389.50 : 121,404 = 121,404 : x
2. Step 2: Convert to fraction form
   80,389.50/121,404 = 121,404/x
3. Step 3: Cross multiply
   80,389.50x = 121,404 × 121,404
4. Step 4: Simplify right side
   80,389.50x = 14,738,931,216
5. Step 5: Solve for x
   x = 14,738,931,216/80,389.50
6. Step 6: Final answer
   x = 183,343.98