Finding the Third Proportional to 40,187.81 and 85,912.31

Step by Step Solution

1. Step 1: Write the proportion equation
   40,187.81 : 85,912.31 = 85,912.31 : x
2. Step 2: Convert to fraction form
   40,187.81/85,912.31 = 85,912.31/x
3. Step 3: Cross multiply
   40,187.81x = 85,912.31 × 85,912.31
4. Step 4: Simplify right side
   40,187.81x = 7,380,925,439.10
5. Step 5: Solve for x
   x = 7,380,925,439.10/40,187.81
6. Step 6: Final answer
   x = 183,660.79