Finding the Third Proportional to 272,574 and 636,682.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,574 : 636,682.50 = 636,682.50 : x
2. Step 2: Convert to fraction form
   272,574/636,682.50 = 636,682.50/x
3. Step 3: Cross multiply
   272,574x = 636,682.50 × 636,682.50
4. Step 4: Simplify right side
   272,574x = 405,364,605,806.25
5. Step 5: Solve for x
   x = 405,364,605,806.25/272,574
6. Step 6: Final answer
   x = 1,487,172.68