Finding the Third Proportional to 49,810 and 78,908

Step by Step Solution

1. Step 1: Write the proportion equation
   49,810 : 78,908 = 78,908 : x
2. Step 2: Convert to fraction form
   49,810/78,908 = 78,908/x
3. Step 3: Cross multiply
   49,810x = 78,908 × 78,908
4. Step 4: Simplify right side
   49,810x = 6,226,472,464
5. Step 5: Solve for x
   x = 6,226,472,464/49,810
6. Step 6: Final answer
   x = 125,004.47