Finding the Third Proportional to 90,360 and 120,757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,360 : 120,757.50 = 120,757.50 : x
2. Step 2: Convert to fraction form
   90,360/120,757.50 = 120,757.50/x
3. Step 3: Cross multiply
   90,360x = 120,757.50 × 120,757.50
4. Step 4: Simplify right side
   90,360x = 14,582,373,806.25
5. Step 5: Solve for x
   x = 14,582,373,806.25/90,360
6. Step 6: Final answer
   x = 161,380.85