Finding the Third Proportional to 78,281.25 and 174,491.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,281.25 : 174,491.25 = 174,491.25 : x
2. Step 2: Convert to fraction form
   78,281.25/174,491.25 = 174,491.25/x
3. Step 3: Cross multiply
   78,281.25x = 174,491.25 × 174,491.25
4. Step 4: Simplify right side
   78,281.25x = 30,447,196,326.56
5. Step 5: Solve for x
   x = 30,447,196,326.56/78,281.25
6. Step 6: Final answer
   x = 388,946.22