Finding the Third Proportional to 78,284.63 and 174,498.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,284.63 : 174,498.38 = 174,498.38 : x
2. Step 2: Convert to fraction form
   78,284.63/174,498.38 = 174,498.38/x
3. Step 3: Cross multiply
   78,284.63x = 174,498.38 × 174,498.38
4. Step 4: Simplify right side
   78,284.63x = 30,449,682,877.64
5. Step 5: Solve for x
   x = 30,449,682,877.64/78,284.63
6. Step 6: Final answer
   x = 388,961.22