Finding the Third Proportional to 49,101.50 and 78,451.38

Step by Step Solution

1. Step 1: Write the proportion equation
   49,101.50 : 78,451.38 = 78,451.38 : x
2. Step 2: Convert to fraction form
   49,101.50/78,451.38 = 78,451.38/x
3. Step 3: Cross multiply
   49,101.50x = 78,451.38 × 78,451.38
4. Step 4: Simplify right side
   49,101.50x = 6,154,618,239.39
5. Step 5: Solve for x
   x = 6,154,618,239.39/49,101.50
6. Step 6: Final answer
   x = 125,344.81