Finding the Third Proportional to 30,331.78 and 65,903.06

Step by Step Solution

1. Step 1: Write the proportion equation
   30,331.78 : 65,903.06 = 65,903.06 : x
2. Step 2: Convert to fraction form
   30,331.78/65,903.06 = 65,903.06/x
3. Step 3: Cross multiply
   30,331.78x = 65,903.06 × 65,903.06
4. Step 4: Simplify right side
   30,331.78x = 4,343,213,646.88
5. Step 5: Solve for x
   x = 4,343,213,646.88/30,331.78
6. Step 6: Final answer
   x = 143,190.19