Finding the Third Proportional to 30,055.50 and 65,781

Step by Step Solution

1. Step 1: Write the proportion equation
   30,055.50 : 65,781 = 65,781 : x
2. Step 2: Convert to fraction form
   30,055.50/65,781 = 65,781/x
3. Step 3: Cross multiply
   30,055.50x = 65,781 × 65,781
4. Step 4: Simplify right side
   30,055.50x = 4,327,139,961
5. Step 5: Solve for x
   x = 4,327,139,961/30,055.50
6. Step 6: Final answer
   x = 143,971.65