Finding the Third Proportional to 272,313.75 and 406,830

Step by Step Solution

1. Step 1: Write the proportion equation
   272,313.75 : 406,830 = 406,830 : x
2. Step 2: Convert to fraction form
   272,313.75/406,830 = 406,830/x
3. Step 3: Cross multiply
   272,313.75x = 406,830 × 406,830
4. Step 4: Simplify right side
   272,313.75x = 165,510,648,900
5. Step 5: Solve for x
   x = 165,510,648,900/272,313.75
6. Step 6: Final answer
   x = 607,793.95