Finding the Third Proportional to 78,225 and 112,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,225 : 112,099.50 = 112,099.50 : x
2. Step 2: Convert to fraction form
   78,225/112,099.50 = 112,099.50/x
3. Step 3: Cross multiply
   78,225x = 112,099.50 × 112,099.50
4. Step 4: Simplify right side
   78,225x = 12,566,297,900.25
5. Step 5: Solve for x
   x = 12,566,297,900.25/78,225
6. Step 6: Final answer
   x = 160,642.99