Finding the Third Proportional to 68,942.50 and 105,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,942.50 : 105,418.50 = 105,418.50 : x
2. Step 2: Convert to fraction form
   68,942.50/105,418.50 = 105,418.50/x
3. Step 3: Cross multiply
   68,942.50x = 105,418.50 × 105,418.50
4. Step 4: Simplify right side
   68,942.50x = 11,113,060,142.25
5. Step 5: Solve for x
   x = 11,113,060,142.25/68,942.50
6. Step 6: Final answer
   x = 161,193.17