Finding the Third Proportional to 61,197 and 86,173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,197 : 86,173.50 = 86,173.50 : x
2. Step 2: Convert to fraction form
   61,197/86,173.50 = 86,173.50/x
3. Step 3: Cross multiply
   61,197x = 86,173.50 × 86,173.50
4. Step 4: Simplify right side
   61,197x = 7,425,872,102.25
5. Step 5: Solve for x
   x = 7,425,872,102.25/61,197
6. Step 6: Final answer
   x = 121,343.73