Finding the Third Proportional to 428,736 and 931,280

Step by Step Solution

1. Step 1: Write the proportion equation
   428,736 : 931,280 = 931,280 : x
2. Step 2: Convert to fraction form
   428,736/931,280 = 931,280/x
3. Step 3: Cross multiply
   428,736x = 931,280 × 931,280
4. Step 4: Simplify right side
   428,736x = 867,282,438,400
5. Step 5: Solve for x
   x = 867,282,438,400/428,736
6. Step 6: Final answer
   x = 2,022,882.24