Finding the Third Proportional to 216,090 and 327,116.25

Step by Step Solution

1. Step 1: Write the proportion equation
   216,090 : 327,116.25 = 327,116.25 : x
2. Step 2: Convert to fraction form
   216,090/327,116.25 = 327,116.25/x
3. Step 3: Cross multiply
   216,090x = 327,116.25 × 327,116.25
4. Step 4: Simplify right side
   216,090x = 107,005,041,014.06
5. Step 5: Solve for x
   x = 107,005,041,014.06/216,090
6. Step 6: Final answer
   x = 495,187.38