Finding the Third Proportional to 721,236 and 1,116,726

Step by Step Solution

1. Step 1: Write the proportion equation
   721,236 : 1,116,726 = 1,116,726 : x
2. Step 2: Convert to fraction form
   721,236/1,116,726 = 1,116,726/x
3. Step 3: Cross multiply
   721,236x = 1,116,726 × 1,116,726
4. Step 4: Simplify right side
   721,236x = 1,247,076,959,076
5. Step 5: Solve for x
   x = 1,247,076,959,076/721,236
6. Step 6: Final answer
   x = 1,729,083.07