Finding the Third Proportional to 721,845 and 1,009,216

Step by Step Solution

1. Step 1: Write the proportion equation
   721,845 : 1,009,216 = 1,009,216 : x
2. Step 2: Convert to fraction form
   721,845/1,009,216 = 1,009,216/x
3. Step 3: Cross multiply
   721,845x = 1,009,216 × 1,009,216
4. Step 4: Simplify right side
   721,845x = 1,018,516,934,656
5. Step 5: Solve for x
   x = 1,018,516,934,656/721,845
6. Step 6: Final answer
   x = 1,410,991.19