Finding the Third Proportional to 35,854.50 and 78,858

Step by Step Solution

1. Step 1: Write the proportion equation
   35,854.50 : 78,858 = 78,858 : x
2. Step 2: Convert to fraction form
   35,854.50/78,858 = 78,858/x
3. Step 3: Cross multiply
   35,854.50x = 78,858 × 78,858
4. Step 4: Simplify right side
   35,854.50x = 6,218,584,164
5. Step 5: Solve for x
   x = 6,218,584,164/35,854.50
6. Step 6: Final answer
   x = 173,439.43