Finding the Third Proportional to 7,438.50 and 9,987.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,438.50 : 9,987.75 = 9,987.75 : x
2. Step 2: Convert to fraction form
   7,438.50/9,987.75 = 9,987.75/x
3. Step 3: Cross multiply
   7,438.50x = 9,987.75 × 9,987.75
4. Step 4: Simplify right side
   7,438.50x = 99,755,150.06
5. Step 5: Solve for x
   x = 99,755,150.06/7,438.50
6. Step 6: Final answer
   x = 13,410.65