Finding the Third Proportional to 55,068.50 and 85,200.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,068.50 : 85,200.75 = 85,200.75 : x
2. Step 2: Convert to fraction form
   55,068.50/85,200.75 = 85,200.75/x
3. Step 3: Cross multiply
   55,068.50x = 85,200.75 × 85,200.75
4. Step 4: Simplify right side
   55,068.50x = 7,259,167,800.56
5. Step 5: Solve for x
   x = 7,259,167,800.56/55,068.50
6. Step 6: Final answer
   x = 131,820.69