Finding the Third Proportional to 113,789 and 247,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,789 : 247,642.50 = 247,642.50 : x
2. Step 2: Convert to fraction form
   113,789/247,642.50 = 247,642.50/x
3. Step 3: Cross multiply
   113,789x = 247,642.50 × 247,642.50
4. Step 4: Simplify right side
   113,789x = 61,326,807,806.25
5. Step 5: Solve for x
   x = 61,326,807,806.25/113,789
6. Step 6: Final answer
   x = 538,951.99