Finding the Third Proportional to 49,383.75 and 78,449.63

Step by Step Solution

1. Step 1: Write the proportion equation
   49,383.75 : 78,449.63 = 78,449.63 : x
2. Step 2: Convert to fraction form
   49,383.75/78,449.63 = 78,449.63/x
3. Step 3: Cross multiply
   49,383.75x = 78,449.63 × 78,449.63
4. Step 4: Simplify right side
   49,383.75x = 6,154,343,662.64
5. Step 5: Solve for x
   x = 6,154,343,662.64/49,383.75
6. Step 6: Final answer
   x = 124,622.85