Finding the Third Proportional to 43,438.50 and 65,623.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,438.50 : 65,623.50 = 65,623.50 : x
2. Step 2: Convert to fraction form
   43,438.50/65,623.50 = 65,623.50/x
3. Step 3: Cross multiply
   43,438.50x = 65,623.50 × 65,623.50
4. Step 4: Simplify right side
   43,438.50x = 4,306,443,752.25
5. Step 5: Solve for x
   x = 4,306,443,752.25/43,438.50
6. Step 6: Final answer
   x = 99,138.87