Finding the Third Proportional to 123,012 and 260,712

Step by Step Solution

1. Step 1: Write the proportion equation
   123,012 : 260,712 = 260,712 : x
2. Step 2: Convert to fraction form
   123,012/260,712 = 260,712/x
3. Step 3: Cross multiply
   123,012x = 260,712 × 260,712
4. Step 4: Simplify right side
   123,012x = 67,970,746,944
5. Step 5: Solve for x
   x = 67,970,746,944/123,012
6. Step 6: Final answer
   x = 552,553.79