Finding the Third Proportional to 661,072 and 1,356,992

Step by Step Solution

1. Step 1: Write the proportion equation
   661,072 : 1,356,992 = 1,356,992 : x
2. Step 2: Convert to fraction form
   661,072/1,356,992 = 1,356,992/x
3. Step 3: Cross multiply
   661,072x = 1,356,992 × 1,356,992
4. Step 4: Simplify right side
   661,072x = 1,841,427,288,064
5. Step 5: Solve for x
   x = 1,841,427,288,064/661,072
6. Step 6: Final answer
   x = 2,785,516.99