Finding the Third Proportional to 140,914 and 248,354

Step by Step Solution

1. Step 1: Write the proportion equation
   140,914 : 248,354 = 248,354 : x
2. Step 2: Convert to fraction form
   140,914/248,354 = 248,354/x
3. Step 3: Cross multiply
   140,914x = 248,354 × 248,354
4. Step 4: Simplify right side
   140,914x = 61,679,709,316
5. Step 5: Solve for x
   x = 61,679,709,316/140,914
6. Step 6: Final answer
   x = 437,711.72