Finding the Third Proportional to 30,921.75 and 67,083.19

Step by Step Solution

1. Step 1: Write the proportion equation
   30,921.75 : 67,083.19 = 67,083.19 : x
2. Step 2: Convert to fraction form
   30,921.75/67,083.19 = 67,083.19/x
3. Step 3: Cross multiply
   30,921.75x = 67,083.19 × 67,083.19
4. Step 4: Simplify right side
   30,921.75x = 4,500,154,045.16
5. Step 5: Solve for x
   x = 4,500,154,045.16/30,921.75
6. Step 6: Final answer
   x = 145,533.61