Finding the Third Proportional to 272,700 and 636,914

Step by Step Solution

1. Step 1: Write the proportion equation
   272,700 : 636,914 = 636,914 : x
2. Step 2: Convert to fraction form
   272,700/636,914 = 636,914/x
3. Step 3: Cross multiply
   272,700x = 636,914 × 636,914
4. Step 4: Simplify right side
   272,700x = 405,659,443,396
5. Step 5: Solve for x
   x = 405,659,443,396/272,700
6. Step 6: Final answer
   x = 1,487,566.72