Finding the Third Proportional to 428,664 and 931,200

Step by Step Solution

1. Step 1: Write the proportion equation
   428,664 : 931,200 = 931,200 : x
2. Step 2: Convert to fraction form
   428,664/931,200 = 931,200/x
3. Step 3: Cross multiply
   428,664x = 931,200 × 931,200
4. Step 4: Simplify right side
   428,664x = 867,133,440,000
5. Step 5: Solve for x
   x = 867,133,440,000/428,664
6. Step 6: Final answer
   x = 2,022,874.42