Finding the Third Proportional to 39,955.78 and 84,839.06

Step by Step Solution

1. Step 1: Write the proportion equation
   39,955.78 : 84,839.06 = 84,839.06 : x
2. Step 2: Convert to fraction form
   39,955.78/84,839.06 = 84,839.06/x
3. Step 3: Cross multiply
   39,955.78x = 84,839.06 × 84,839.06
4. Step 4: Simplify right side
   39,955.78x = 7,197,666,525.88
5. Step 5: Solve for x
   x = 7,197,666,525.88/39,955.78
6. Step 6: Final answer
   x = 180,140.80