Finding the Third Proportional to 121,851.50 and 267,242

Step by Step Solution

1. Step 1: Write the proportion equation
   121,851.50 : 267,242 = 267,242 : x
2. Step 2: Convert to fraction form
   121,851.50/267,242 = 267,242/x
3. Step 3: Cross multiply
   121,851.50x = 267,242 × 267,242
4. Step 4: Simplify right side
   121,851.50x = 71,418,286,564
5. Step 5: Solve for x
   x = 71,418,286,564/121,851.50
6. Step 6: Final answer
   x = 586,109.21