Finding the Third Proportional to 409,212 and 889,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   409,212 : 889,258.50 = 889,258.50 : x
2. Step 2: Convert to fraction form
   409,212/889,258.50 = 889,258.50/x
3. Step 3: Cross multiply
   409,212x = 889,258.50 × 889,258.50
4. Step 4: Simplify right side
   409,212x = 790,780,679,822.25
5. Step 5: Solve for x
   x = 790,780,679,822.25/409,212
6. Step 6: Final answer
   x = 1,932,447.44