Finding the Third Proportional to 201,218 and 272,300

Step by Step Solution

1. Step 1: Write the proportion equation
   201,218 : 272,300 = 272,300 : x
2. Step 2: Convert to fraction form
   201,218/272,300 = 272,300/x
3. Step 3: Cross multiply
   201,218x = 272,300 × 272,300
4. Step 4: Simplify right side
   201,218x = 74,147,290,000
5. Step 5: Solve for x
   x = 74,147,290,000/201,218
6. Step 6: Final answer
   x = 368,492.33