Finding the Third Proportional to 428,672 and 931,144

Step by Step Solution

1. Step 1: Write the proportion equation
   428,672 : 931,144 = 931,144 : x
2. Step 2: Convert to fraction form
   428,672/931,144 = 931,144/x
3. Step 3: Cross multiply
   428,672x = 931,144 × 931,144
4. Step 4: Simplify right side
   428,672x = 867,029,148,736
5. Step 5: Solve for x
   x = 867,029,148,736/428,672
6. Step 6: Final answer
   x = 2,022,593.38