Finding the Third Proportional to 5,431.88 and 7,748.06

Step by Step Solution

1. Step 1: Write the proportion equation
   5,431.88 : 7,748.06 = 7,748.06 : x
2. Step 2: Convert to fraction form
   5,431.88/7,748.06 = 7,748.06/x
3. Step 3: Cross multiply
   5,431.88x = 7,748.06 × 7,748.06
4. Step 4: Simplify right side
   5,431.88x = 60,032,472.50
5. Step 5: Solve for x
   x = 60,032,472.50/5,431.88
6. Step 6: Final answer
   x = 11,051.89