Finding the Third Proportional to 53,655.50 and 85,408.75

Step by Step Solution

1. Step 1: Write the proportion equation
   53,655.50 : 85,408.75 = 85,408.75 : x
2. Step 2: Convert to fraction form
   53,655.50/85,408.75 = 85,408.75/x
3. Step 3: Cross multiply
   53,655.50x = 85,408.75 × 85,408.75
4. Step 4: Simplify right side
   53,655.50x = 7,294,654,576.56
5. Step 5: Solve for x
   x = 7,294,654,576.56/53,655.50
6. Step 6: Final answer
   x = 135,953.53