Finding the Third Proportional to 216,112.50 and 317,164.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,112.50 : 317,164.50 = 317,164.50 : x
2. Step 2: Convert to fraction form
   216,112.50/317,164.50 = 317,164.50/x
3. Step 3: Cross multiply
   216,112.50x = 317,164.50 × 317,164.50
4. Step 4: Simplify right side
   216,112.50x = 100,593,320,060.25
5. Step 5: Solve for x
   x = 100,593,320,060.25/216,112.50
6. Step 6: Final answer
   x = 465,467.38