Finding the Third Proportional to 660,054 and 1,020,390

Step by Step Solution

1. Step 1: Write the proportion equation
   660,054 : 1,020,390 = 1,020,390 : x
2. Step 2: Convert to fraction form
   660,054/1,020,390 = 1,020,390/x
3. Step 3: Cross multiply
   660,054x = 1,020,390 × 1,020,390
4. Step 4: Simplify right side
   660,054x = 1,041,195,752,100
5. Step 5: Solve for x
   x = 1,041,195,752,100/660,054
6. Step 6: Final answer
   x = 1,577,440.26