Finding the Third Proportional to 43,978.50 and 68,118

Step by Step Solution

1. Step 1: Write the proportion equation
   43,978.50 : 68,118 = 68,118 : x
2. Step 2: Convert to fraction form
   43,978.50/68,118 = 68,118/x
3. Step 3: Cross multiply
   43,978.50x = 68,118 × 68,118
4. Step 4: Simplify right side
   43,978.50x = 4,640,061,924
5. Step 5: Solve for x
   x = 4,640,061,924/43,978.50
6. Step 6: Final answer
   x = 105,507.51