Finding the Third Proportional to 91,170.56 and 138,013.88

Step by Step Solution

1. Step 1: Write the proportion equation
   91,170.56 : 138,013.88 = 138,013.88 : x
2. Step 2: Convert to fraction form
   91,170.56/138,013.88 = 138,013.88/x
3. Step 3: Cross multiply
   91,170.56x = 138,013.88 × 138,013.88
4. Step 4: Simplify right side
   91,170.56x = 19,047,829,692.52
5. Step 5: Solve for x
   x = 19,047,829,692.52/91,170.56
6. Step 6: Final answer
   x = 208,925.22