Finding the Third Proportional to 43,818 and 68,647.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,818 : 68,647.50 = 68,647.50 : x
2. Step 2: Convert to fraction form
   43,818/68,647.50 = 68,647.50/x
3. Step 3: Cross multiply
   43,818x = 68,647.50 × 68,647.50
4. Step 4: Simplify right side
   43,818x = 4,712,479,256.25
5. Step 5: Solve for x
   x = 4,712,479,256.25/43,818
6. Step 6: Final answer
   x = 107,546.65