Finding the Third Proportional to 55,343.25 and 77,658.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,343.25 : 77,658.75 = 77,658.75 : x
2. Step 2: Convert to fraction form
   55,343.25/77,658.75 = 77,658.75/x
3. Step 3: Cross multiply
   55,343.25x = 77,658.75 × 77,658.75
4. Step 4: Simplify right side
   55,343.25x = 6,030,881,451.56
5. Step 5: Solve for x
   x = 6,030,881,451.56/55,343.25
6. Step 6: Final answer
   x = 108,972.30