Finding the Third Proportional to 578,292 and 1,253,109

Step by Step Solution

1. Step 1: Write the proportion equation
   578,292 : 1,253,109 = 1,253,109 : x
2. Step 2: Convert to fraction form
   578,292/1,253,109 = 1,253,109/x
3. Step 3: Cross multiply
   578,292x = 1,253,109 × 1,253,109
4. Step 4: Simplify right side
   578,292x = 1,570,282,165,881
5. Step 5: Solve for x
   x = 1,570,282,165,881/578,292
6. Step 6: Final answer
   x = 2,715,379.37