Finding the Third Proportional to 42,201.75 and 66,826.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,201.75 : 66,826.13 = 66,826.13 : x
2. Step 2: Convert to fraction form
   42,201.75/66,826.13 = 66,826.13/x
3. Step 3: Cross multiply
   42,201.75x = 66,826.13 × 66,826.13
4. Step 4: Simplify right side
   42,201.75x = 4,465,730,982.52
5. Step 5: Solve for x
   x = 4,465,730,982.52/42,201.75
6. Step 6: Final answer
   x = 105,818.62