Finding the Third Proportional to 43,338.50 and 66,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,338.50 : 66,521.50 = 66,521.50 : x
2. Step 2: Convert to fraction form
   43,338.50/66,521.50 = 66,521.50/x
3. Step 3: Cross multiply
   43,338.50x = 66,521.50 × 66,521.50
4. Step 4: Simplify right side
   43,338.50x = 4,425,109,962.25
5. Step 5: Solve for x
   x = 4,425,109,962.25/43,338.50
6. Step 6: Final answer
   x = 102,105.75