Finding the Third Proportional to 121,111.50 and 265,551

Step by Step Solution

1. Step 1: Write the proportion equation
   121,111.50 : 265,551 = 265,551 : x
2. Step 2: Convert to fraction form
   121,111.50/265,551 = 265,551/x
3. Step 3: Cross multiply
   121,111.50x = 265,551 × 265,551
4. Step 4: Simplify right side
   121,111.50x = 70,517,333,601
5. Step 5: Solve for x
   x = 70,517,333,601/121,111.50
6. Step 6: Final answer
   x = 582,251.34