Finding the Third Proportional to 121,479.75 and 265,087.69

Step by Step Solution

1. Step 1: Write the proportion equation
   121,479.75 : 265,087.69 = 265,087.69 : x
2. Step 2: Convert to fraction form
   121,479.75/265,087.69 = 265,087.69/x
3. Step 3: Cross multiply
   121,479.75x = 265,087.69 × 265,087.69
4. Step 4: Simplify right side
   121,479.75x = 70,271,482,064.10
5. Step 5: Solve for x
   x = 70,271,482,064.10/121,479.75
6. Step 6: Final answer
   x = 578,462.52