Finding the Third Proportional to 121,500.50 and 265,110

Step by Step Solution

1. Step 1: Write the proportion equation
   121,500.50 : 265,110 = 265,110 : x
2. Step 2: Convert to fraction form
   121,500.50/265,110 = 265,110/x
3. Step 3: Cross multiply
   121,500.50x = 265,110 × 265,110
4. Step 4: Simplify right side
   121,500.50x = 70,283,312,100
5. Step 5: Solve for x
   x = 70,283,312,100/121,500.50
6. Step 6: Final answer
   x = 578,461.09