Finding the Third Proportional to 50,479.50 and 78,386.75

Step by Step Solution

1. Step 1: Write the proportion equation
   50,479.50 : 78,386.75 = 78,386.75 : x
2. Step 2: Convert to fraction form
   50,479.50/78,386.75 = 78,386.75/x
3. Step 3: Cross multiply
   50,479.50x = 78,386.75 × 78,386.75
4. Step 4: Simplify right side
   50,479.50x = 6,144,482,575.56
5. Step 5: Solve for x
   x = 6,144,482,575.56/50,479.50
6. Step 6: Final answer
   x = 121,722.33