Finding the Third Proportional to 54,684.50 and 78,198.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,684.50 : 78,198.50 = 78,198.50 : x
2. Step 2: Convert to fraction form
   54,684.50/78,198.50 = 78,198.50/x
3. Step 3: Cross multiply
   54,684.50x = 78,198.50 × 78,198.50
4. Step 4: Simplify right side
   54,684.50x = 6,115,005,402.25
5. Step 5: Solve for x
   x = 6,115,005,402.25/54,684.50
6. Step 6: Final answer
   x = 111,823.38