Finding the Third Proportional to 207,612 and 272,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   207,612 : 272,608.50 = 272,608.50 : x
2. Step 2: Convert to fraction form
   207,612/272,608.50 = 272,608.50/x
3. Step 3: Cross multiply
   207,612x = 272,608.50 × 272,608.50
4. Step 4: Simplify right side
   207,612x = 74,315,394,272.25
5. Step 5: Solve for x
   x = 74,315,394,272.25/207,612
6. Step 6: Final answer
   x = 357,953.27