Finding the Third Proportional to 542,688 and 797,773.50

Step by Step Solution

1. Step 1: Write the proportion equation
   542,688 : 797,773.50 = 797,773.50 : x
2. Step 2: Convert to fraction form
   542,688/797,773.50 = 797,773.50/x
3. Step 3: Cross multiply
   542,688x = 797,773.50 × 797,773.50
4. Step 4: Simplify right side
   542,688x = 636,442,557,302.25
5. Step 5: Solve for x
   x = 636,442,557,302.25/542,688
6. Step 6: Final answer
   x = 1,172,759.59