Finding the Third Proportional to 428,144.50 and 931,660

Step by Step Solution

1. Step 1: Write the proportion equation
   428,144.50 : 931,660 = 931,660 : x
2. Step 2: Convert to fraction form
   428,144.50/931,660 = 931,660/x
3. Step 3: Cross multiply
   428,144.50x = 931,660 × 931,660
4. Step 4: Simplify right side
   428,144.50x = 867,990,355,600
5. Step 5: Solve for x
   x = 867,990,355,600/428,144.50
6. Step 6: Final answer
   x = 2,027,330.39