Finding the Third Proportional to 49,443.75 and 78,612.19

Step by Step Solution

1. Step 1: Write the proportion equation
   49,443.75 : 78,612.19 = 78,612.19 : x
2. Step 2: Convert to fraction form
   49,443.75/78,612.19 = 78,612.19/x
3. Step 3: Cross multiply
   49,443.75x = 78,612.19 × 78,612.19
4. Step 4: Simplify right side
   49,443.75x = 6,179,876,023.54
5. Step 5: Solve for x
   x = 6,179,876,023.54/49,443.75
6. Step 6: Final answer
   x = 124,988.01