Finding the Third Proportional to 542,869 and 798,514.50

Step by Step Solution

1. Step 1: Write the proportion equation
   542,869 : 798,514.50 = 798,514.50 : x
2. Step 2: Convert to fraction form
   542,869/798,514.50 = 798,514.50/x
3. Step 3: Cross multiply
   542,869x = 798,514.50 × 798,514.50
4. Step 4: Simplify right side
   542,869x = 637,625,406,710.25
5. Step 5: Solve for x
   x = 637,625,406,710.25/542,869
6. Step 6: Final answer
   x = 1,174,547.46