Finding the Third Proportional to 49,287.38 and 77,216.63

Step by Step Solution

1. Step 1: Write the proportion equation
   49,287.38 : 77,216.63 = 77,216.63 : x
2. Step 2: Convert to fraction form
   49,287.38/77,216.63 = 77,216.63/x
3. Step 3: Cross multiply
   49,287.38x = 77,216.63 × 77,216.63
4. Step 4: Simplify right side
   49,287.38x = 5,962,407,176.39
5. Step 5: Solve for x
   x = 5,962,407,176.39/49,287.38
6. Step 6: Final answer
   x = 120,972.30