Finding the Third Proportional to 428,738 and 931,260

Step by Step Solution

1. Step 1: Write the proportion equation
   428,738 : 931,260 = 931,260 : x
2. Step 2: Convert to fraction form
   428,738/931,260 = 931,260/x
3. Step 3: Cross multiply
   428,738x = 931,260 × 931,260
4. Step 4: Simplify right side
   428,738x = 867,245,187,600
5. Step 5: Solve for x
   x = 867,245,187,600/428,738
6. Step 6: Final answer
   x = 2,022,785.91