Finding the Third Proportional to 56,401.50 and 78,850.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,401.50 : 78,850.50 = 78,850.50 : x
2. Step 2: Convert to fraction form
   56,401.50/78,850.50 = 78,850.50/x
3. Step 3: Cross multiply
   56,401.50x = 78,850.50 × 78,850.50
4. Step 4: Simplify right side
   56,401.50x = 6,217,401,350.25
5. Step 5: Solve for x
   x = 6,217,401,350.25/56,401.50
6. Step 6: Final answer
   x = 110,234.68