Finding the Third Proportional to 1,290,816 and 2,805,516

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290,816 : 2,805,516 = 2,805,516 : x
2. Step 2: Convert to fraction form
   1,290,816/2,805,516 = 2,805,516/x
3. Step 3: Cross multiply
   1,290,816x = 2,805,516 × 2,805,516
4. Step 4: Simplify right side
   1,290,816x = 7,870,920,026,256
5. Step 5: Solve for x
   x = 7,870,920,026,256/1,290,816
6. Step 6: Final answer
   x = 6,097,631.29