Finding the Third Proportional to 203,886 and 479,702.50

Step by Step Solution

1. Step 1: Write the proportion equation
   203,886 : 479,702.50 = 479,702.50 : x
2. Step 2: Convert to fraction form
   203,886/479,702.50 = 479,702.50/x
3. Step 3: Cross multiply
   203,886x = 479,702.50 × 479,702.50
4. Step 4: Simplify right side
   203,886x = 230,114,488,506.25
5. Step 5: Solve for x
   x = 230,114,488,506.25/203,886
6. Step 6: Final answer
   x = 1,128,642.91