Finding the Third Proportional to 42,808.50 and 68,176.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,808.50 : 68,176.50 = 68,176.50 : x
2. Step 2: Convert to fraction form
   42,808.50/68,176.50 = 68,176.50/x
3. Step 3: Cross multiply
   42,808.50x = 68,176.50 × 68,176.50
4. Step 4: Simplify right side
   42,808.50x = 4,648,035,152.25
5. Step 5: Solve for x
   x = 4,648,035,152.25/42,808.50
6. Step 6: Final answer
   x = 108,577.39