Finding the Third Proportional to 121,757.50 and 266,427

Step by Step Solution

1. Step 1: Write the proportion equation
   121,757.50 : 266,427 = 266,427 : x
2. Step 2: Convert to fraction form
   121,757.50/266,427 = 266,427/x
3. Step 3: Cross multiply
   121,757.50x = 266,427 × 266,427
4. Step 4: Simplify right side
   121,757.50x = 70,983,346,329
5. Step 5: Solve for x
   x = 70,983,346,329/121,757.50
6. Step 6: Final answer
   x = 582,989.52