Finding the Third Proportional to 912,912 and 1,211,616

Step by Step Solution

1. Step 1: Write the proportion equation
   912,912 : 1,211,616 = 1,211,616 : x
2. Step 2: Convert to fraction form
   912,912/1,211,616 = 1,211,616/x
3. Step 3: Cross multiply
   912,912x = 1,211,616 × 1,211,616
4. Step 4: Simplify right side
   912,912x = 1,468,013,331,456
5. Step 5: Solve for x
   x = 1,468,013,331,456/912,912
6. Step 6: Final answer
   x = 1,608,055.68