Finding the Third Proportional to 30,663.56 and 68,288.06

Step by Step Solution

1. Step 1: Write the proportion equation
   30,663.56 : 68,288.06 = 68,288.06 : x
2. Step 2: Convert to fraction form
   30,663.56/68,288.06 = 68,288.06/x
3. Step 3: Cross multiply
   30,663.56x = 68,288.06 × 68,288.06
4. Step 4: Simplify right side
   30,663.56x = 4,663,259,480.00
5. Step 5: Solve for x
   x = 4,663,259,480.00/30,663.56
6. Step 6: Final answer
   x = 152,078.20