Finding the Third Proportional to 583,688 and 1,278,090

Step by Step Solution

1. Step 1: Write the proportion equation
   583,688 : 1,278,090 = 1,278,090 : x
2. Step 2: Convert to fraction form
   583,688/1,278,090 = 1,278,090/x
3. Step 3: Cross multiply
   583,688x = 1,278,090 × 1,278,090
4. Step 4: Simplify right side
   583,688x = 1,633,514,048,100
5. Step 5: Solve for x
   x = 1,633,514,048,100/583,688
6. Step 6: Final answer
   x = 2,798,608.24