Finding the Third Proportional to 121,111.50 and 260,733

Step by Step Solution

1. Step 1: Write the proportion equation
   121,111.50 : 260,733 = 260,733 : x
2. Step 2: Convert to fraction form
   121,111.50/260,733 = 260,733/x
3. Step 3: Cross multiply
   121,111.50x = 260,733 × 260,733
4. Step 4: Simplify right side
   121,111.50x = 67,981,697,289
5. Step 5: Solve for x
   x = 67,981,697,289/121,111.50
6. Step 6: Final answer
   x = 561,314.96