Finding the Third Proportional to 35,457.75 and 54,978.75

Step by Step Solution

1. Step 1: Write the proportion equation
   35,457.75 : 54,978.75 = 54,978.75 : x
2. Step 2: Convert to fraction form
   35,457.75/54,978.75 = 54,978.75/x
3. Step 3: Cross multiply
   35,457.75x = 54,978.75 × 54,978.75
4. Step 4: Simplify right side
   35,457.75x = 3,022,662,951.56
5. Step 5: Solve for x
   x = 3,022,662,951.56/35,457.75
6. Step 6: Final answer
   x = 85,246.89