Finding the Third Proportional to 50,704.13 and 78,821.63

Step by Step Solution

1. Step 1: Write the proportion equation
   50,704.13 : 78,821.63 = 78,821.63 : x
2. Step 2: Convert to fraction form
   50,704.13/78,821.63 = 78,821.63/x
3. Step 3: Cross multiply
   50,704.13x = 78,821.63 × 78,821.63
4. Step 4: Simplify right side
   50,704.13x = 6,212,848,567.64
5. Step 5: Solve for x
   x = 6,212,848,567.64/50,704.13
6. Step 6: Final answer
   x = 122,531.42