Finding the Third Proportional to 49,400.50 and 78,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,400.50 : 78,474.50 = 78,474.50 : x
2. Step 2: Convert to fraction form
   49,400.50/78,474.50 = 78,474.50/x
3. Step 3: Cross multiply
   49,400.50x = 78,474.50 × 78,474.50
4. Step 4: Simplify right side
   49,400.50x = 6,158,247,150.25
5. Step 5: Solve for x
   x = 6,158,247,150.25/49,400.50
6. Step 6: Final answer
   x = 124,659.61