Finding the Third Proportional to 49,787 and 78,873.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,787 : 78,873.50 = 78,873.50 : x
2. Step 2: Convert to fraction form
   49,787/78,873.50 = 78,873.50/x
3. Step 3: Cross multiply
   49,787x = 78,873.50 × 78,873.50
4. Step 4: Simplify right side
   49,787x = 6,221,029,002.25
5. Step 5: Solve for x
   x = 6,221,029,002.25/49,787
6. Step 6: Final answer
   x = 124,952.88