Finding the Third Proportional to 201,228 and 272,317.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,228 : 272,317.50 = 272,317.50 : x
2. Step 2: Convert to fraction form
   201,228/272,317.50 = 272,317.50/x
3. Step 3: Cross multiply
   201,228x = 272,317.50 × 272,317.50
4. Step 4: Simplify right side
   201,228x = 74,156,820,806.25
5. Step 5: Solve for x
   x = 74,156,820,806.25/201,228
6. Step 6: Final answer
   x = 368,521.38